diff --git a/src/main/java/com/resend/Resend.java b/src/main/java/com/resend/Resend.java
index 2016865..bda3613 100644
--- a/src/main/java/com/resend/Resend.java
+++ b/src/main/java/com/resend/Resend.java
@@ -7,6 +7,7 @@
 import com.resend.services.contacts.Contacts;
 import com.resend.services.domains.Domains;
 import com.resend.services.emails.Emails;
+import com.resend.services.templates.Templates;
 
 /**
  * The Resend class provides a facade for the Domains and Emails services.
@@ -89,4 +90,13 @@ public Batch batch() {
     public Broadcasts broadcasts() {
         return new Broadcasts(apiKey);
     }
+
+    /**
+     * Returns a Templates object that can be used to interact with the Templates service.
+     *
+     * @return A Templates object.
+     */
+    public Templates templates() {
+        return new Templates(apiKey);
+    }
 }
diff --git a/src/main/java/com/resend/services/templates/Templates.java b/src/main/java/com/resend/services/templates/Templates.java
new file mode 100644
index 0000000..14a3c79
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/Templates.java
@@ -0,0 +1,180 @@
+package com.resend.services.templates;
+
+import com.resend.core.exception.ResendException;
+import com.resend.core.helper.URLHelper;
+import com.resend.core.net.AbstractHttpResponse;
+import com.resend.core.net.HttpMethod;
+import com.resend.core.net.ListParams;
+import com.resend.core.service.BaseService;
+import com.resend.services.templates.model.*;
+import okhttp3.MediaType;
+
+/**
+ * Represents the Resend Templates module.
+ */
+public final class Templates extends BaseService {
+
+    /**
+     * Constructs an instance of the {@code Templates} class.
+     *
+     * @param apiKey The apiKey used for authentication.
+     */
+    public Templates(final String apiKey) {
+        super(apiKey);
+    }
+
+    /**
+     * Creates a new template.
+     *
+     * @param options The options for creating the template.
+     * @return The response indicating the status of the template creation.
+     * @throws ResendException If an error occurs while creating the template.
+     */
+    public CreateTemplateResponseSuccess create(CreateTemplateOptions options) throws ResendException {
+        String payload = super.resendMapper.writeValue(options);
+        AbstractHttpResponse<String> response = super.httpClient.perform("/templates", super.apiKey, HttpMethod.POST, payload, MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, CreateTemplateResponseSuccess.class);
+    }
+
+    /**
+     * Retrieves a template by its unique identifier or alias.
+     *
+     * @param templateId The unique identifier or alias of the template.
+     * @return The retrieved template's details.
+     * @throws ResendException If an error occurs while retrieving the template.
+     */
+    public GetTemplateResponseSuccess get(String templateId) throws ResendException {
+        AbstractHttpResponse<String> response = this.httpClient.perform("/templates/" + templateId, super.apiKey, HttpMethod.GET, null, MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, GetTemplateResponseSuccess.class);
+    }
+
+    /**
+     * Retrieves a list of templates.
+     *
+     * @return A ListTemplatesResponse containing the list of templates.
+     * @throws ResendException If an error occurs during the templates list retrieval process.
+     */
+    public ListTemplatesResponseSuccess list() throws ResendException {
+        AbstractHttpResponse<String> response = this.httpClient.perform("/templates", super.apiKey, HttpMethod.GET, null, MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, ListTemplatesResponseSuccess.class);
+    }
+
+    /**
+     * Retrieves a paginated list of templates.
+     *
+     * @param params The params used to customize the list.
+     * @return A ListTemplatesResponse containing the paginated list of templates.
+     * @throws ResendException If an error occurs during the templates list retrieval process.
+     */
+    public ListTemplatesResponseSuccess list(ListParams params) throws ResendException {
+        String pathWithQuery = "/templates" + URLHelper.parse(params);
+        AbstractHttpResponse<String> response = this.httpClient.perform(pathWithQuery, super.apiKey, HttpMethod.GET, null, MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, ListTemplatesResponseSuccess.class);
+    }
+
+    /**
+     * Updates a template by its unique identifier or alias.
+     *
+     * @param templateId The unique identifier or alias of the template.
+     * @param options    The options for updating the template.
+     * @return The response indicating the status of the template update.
+     * @throws ResendException If an error occurs while updating the template.
+     */
+    public UpdateTemplateResponseSuccess update(String templateId, UpdateTemplateOptions options) throws ResendException {
+        String payload = super.resendMapper.writeValue(options);
+        AbstractHttpResponse<String> response = this.httpClient.perform("/templates/" + templateId, super.apiKey, HttpMethod.PATCH, payload, MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, UpdateTemplateResponseSuccess.class);
+    }
+
+    /**
+     * Deletes a template by its unique identifier or alias.
+     *
+     * @param templateId The unique identifier or alias of the template.
+     * @return The response indicating the status of the template deletion.
+     * @throws ResendException If an error occurs while deleting the template.
+     */
+    public DeleteTemplateResponseSuccess remove(String templateId) throws ResendException {
+        AbstractHttpResponse<String> response = this.httpClient.perform("/templates/" + templateId, super.apiKey, HttpMethod.DELETE, null, MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, DeleteTemplateResponseSuccess.class);
+    }
+
+    /**
+     * Duplicates a template by its unique identifier or alias.
+     *
+     * @param templateId The unique identifier or alias of the template.
+     * @return The response indicating the status of the template duplication.
+     * @throws ResendException If an error occurs while duplicating the template.
+     */
+    public DuplicateTemplateResponseSuccess duplicate(String templateId) throws ResendException {
+        AbstractHttpResponse<String> response = this.httpClient.perform("/templates/" + templateId + "/duplicate", super.apiKey, HttpMethod.POST, "", MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, DuplicateTemplateResponseSuccess.class);
+    }
+
+    /**
+     * Publishes a template by its unique identifier or alias.
+     *
+     * @param templateId The unique identifier or alias of the template.
+     * @return The response indicating the status of the template publication.
+     * @throws ResendException If an error occurs while publishing the template.
+     */
+    public PublishTemplateResponseSuccess publish(String templateId) throws ResendException {
+        AbstractHttpResponse<String> response = this.httpClient.perform("/templates/" + templateId + "/publish", super.apiKey, HttpMethod.POST, "", MediaType.get("application/json"));
+
+        if (!response.isSuccessful()) {
+            throw new ResendException(response.getCode(), response.getBody());
+        }
+
+        String responseBody = response.getBody();
+
+        return resendMapper.readValue(responseBody, PublishTemplateResponseSuccess.class);
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/CreateTemplateOptions.java b/src/main/java/com/resend/services/templates/model/CreateTemplateOptions.java
new file mode 100644
index 0000000..702ed87
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/CreateTemplateOptions.java
@@ -0,0 +1,301 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Represents options for creating a template.
+ */
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class CreateTemplateOptions {
+
+    @JsonProperty("name")
+    private final String name;
+
+    @JsonProperty("alias")
+    private final String alias;
+
+    @JsonProperty("from")
+    private final String from;
+
+    @JsonProperty("subject")
+    private final String subject;
+
+    @JsonProperty("reply_to")
+    private final List<String> replyTo;
+
+    @JsonProperty("html")
+    private final String html;
+
+    @JsonProperty("text")
+    private final String text;
+
+    @JsonProperty("variables")
+    private final List<Variable> variables;
+
+    private CreateTemplateOptions(Builder builder) {
+        this.name = builder.name;
+        this.alias = builder.alias;
+        this.from = builder.from;
+        this.subject = builder.subject;
+        this.replyTo = builder.replyTo;
+        this.html = builder.html;
+        this.text = builder.text;
+        this.variables = builder.variables;
+    }
+
+    /**
+     * Gets the name of the template.
+     *
+     * @return The name of the template.
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Gets the alias of the template.
+     *
+     * @return The alias of the template.
+     */
+    public String getAlias() {
+        return alias;
+    }
+
+    /**
+     * Gets the sender email address.
+     *
+     * @return The sender email address.
+     */
+    public String getFrom() {
+        return from;
+    }
+
+    /**
+     * Gets the email subject.
+     *
+     * @return The email subject.
+     */
+    public String getSubject() {
+        return subject;
+    }
+
+    /**
+     * Gets the reply-to email addresses.
+     *
+     * @return The reply-to email addresses.
+     */
+    public List<String> getReplyTo() {
+        return replyTo;
+    }
+
+    /**
+     * Gets the HTML version of the template.
+     *
+     * @return The HTML version of the template.
+     */
+    public String getHtml() {
+        return html;
+    }
+
+    /**
+     * Gets the plain text version of the template.
+     *
+     * @return The plain text version of the template.
+     */
+    public String getText() {
+        return text;
+    }
+
+    /**
+     * Gets the list of variables used in the template.
+     *
+     * @return The list of variables.
+     */
+    public List<Variable> getVariables() {
+        return variables;
+    }
+
+    /**
+     * Creates a new builder instance to construct CreateTemplateOptions.
+     *
+     * @return A new builder instance.
+     */
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    /**
+     * Builder class for constructing CreateTemplateOptions instances.
+     */
+    public static class Builder {
+        private String name;
+        private String alias;
+        private String from;
+        private String subject;
+        private List<String> replyTo;
+        private String html;
+        private String text;
+        private List<Variable> variables;
+
+        /**
+         * Sets the name of the template.
+         *
+         * @param name The name of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        /**
+         * Sets the alias of the template.
+         *
+         * @param alias The alias of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder alias(String alias) {
+            this.alias = alias;
+            return this;
+        }
+
+        /**
+         * Sets the sender email address.
+         *
+         * @param from The sender email address.
+         * @return This builder instance for method chaining.
+         */
+        public Builder from(String from) {
+            this.from = from;
+            return this;
+        }
+
+        /**
+         * Sets the email subject.
+         *
+         * @param subject The email subject.
+         * @return This builder instance for method chaining.
+         */
+        public Builder subject(String subject) {
+            this.subject = subject;
+            return this;
+        }
+
+        /**
+         * Sets the reply-to email addresses.
+         *
+         * @param replyTo The reply-to email addresses.
+         * @return This builder instance for method chaining.
+         */
+        public Builder replyTo(String... replyTo) {
+            if (this.replyTo == null) {
+                this.replyTo = new ArrayList<>();
+            }
+            for (String email : replyTo) {
+                this.replyTo.add(email);
+            }
+            return this;
+        }
+
+        /**
+         * Sets the reply-to email addresses.
+         *
+         * @param replyTo The reply-to email addresses.
+         * @return This builder instance for method chaining.
+         */
+        public Builder replyTo(List<String> replyTo) {
+            this.replyTo = replyTo;
+            return this;
+        }
+
+        /**
+         * Adds a single reply-to email address.
+         *
+         * @param email The reply-to email address to add.
+         * @return This builder instance for method chaining.
+         */
+        public Builder addReplyTo(String email) {
+            if (this.replyTo == null) {
+                this.replyTo = new ArrayList<>();
+            }
+            this.replyTo.add(email);
+            return this;
+        }
+
+        /**
+         * Sets the HTML version of the template.
+         *
+         * @param html The HTML version of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder html(String html) {
+            this.html = html;
+            return this;
+        }
+
+        /**
+         * Sets the plain text version of the template.
+         *
+         * @param text The plain text version of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder text(String text) {
+            this.text = text;
+            return this;
+        }
+
+        /**
+         * Sets the list of variables used in the template.
+         *
+         * @param variables The list of variables.
+         * @return This builder instance for method chaining.
+         */
+        public Builder variables(Variable... variables) {
+            if (this.variables == null) {
+                this.variables = new ArrayList<>();
+            }
+            for (Variable variable : variables) {
+                this.variables.add(variable);
+            }
+            return this;
+        }
+
+        /**
+         * Sets the list of variables used in the template.
+         *
+         * @param variables The list of variables.
+         * @return This builder instance for method chaining.
+         */
+        public Builder variables(List<Variable> variables) {
+            this.variables = variables;
+            return this;
+        }
+
+        /**
+         * Adds a single variable to the template.
+         *
+         * @param variable The variable to add.
+         * @return This builder instance for method chaining.
+         */
+        public Builder addVariable(Variable variable) {
+            if (this.variables == null) {
+                this.variables = new ArrayList<>();
+            }
+            this.variables.add(variable);
+            return this;
+        }
+
+        /**
+         * Builds and returns a CreateTemplateOptions instance.
+         *
+         * @return A CreateTemplateOptions instance.
+         */
+        public CreateTemplateOptions build() {
+            return new CreateTemplateOptions(this);
+        }
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/CreateTemplateResponseSuccess.java b/src/main/java/com/resend/services/templates/model/CreateTemplateResponseSuccess.java
new file mode 100644
index 0000000..c916a12
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/CreateTemplateResponseSuccess.java
@@ -0,0 +1,68 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Represents the response from creating a template.
+ */
+public class CreateTemplateResponseSuccess {
+
+    @JsonProperty("id")
+    private String id;
+
+    @JsonProperty("object")
+    private String object;
+
+    /**
+     * Default constructor.
+     */
+    public CreateTemplateResponseSuccess() {
+    }
+
+    /**
+     * Constructs a CreateTemplateResponse with the specified attributes.
+     *
+     * @param id     The ID of the created template.
+     * @param object The object type.
+     */
+    public CreateTemplateResponseSuccess(String id, String object) {
+        this.id = id;
+        this.object = object;
+    }
+
+    /**
+     * Gets the ID of the created template.
+     *
+     * @return The ID of the created template.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the created template.
+     *
+     * @param id The ID of the created template.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    /**
+     * Gets the object type.
+     *
+     * @return The object type.
+     */
+    public String getObject() {
+        return object;
+    }
+
+    /**
+     * Sets the object type.
+     *
+     * @param object The object type.
+     */
+    public void setObject(String object) {
+        this.object = object;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/DeleteTemplateResponseSuccess.java b/src/main/java/com/resend/services/templates/model/DeleteTemplateResponseSuccess.java
new file mode 100644
index 0000000..049a7b2
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/DeleteTemplateResponseSuccess.java
@@ -0,0 +1,91 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Represents the response from deleting a template.
+ */
+public class DeleteTemplateResponseSuccess {
+
+    @JsonProperty("object")
+    private String object;
+
+    @JsonProperty("id")
+    private String id;
+
+    @JsonProperty("deleted")
+    private Boolean deleted;
+
+    /**
+     * Default constructor.
+     */
+    public DeleteTemplateResponseSuccess() {
+    }
+
+    /**
+     * Constructs a DeleteTemplateResponse with the specified attributes.
+     *
+     * @param object  The object type.
+     * @param id      The ID of the deleted template.
+     * @param deleted Whether the template was deleted.
+     */
+    public DeleteTemplateResponseSuccess(String object, String id, Boolean deleted) {
+        this.object = object;
+        this.id = id;
+        this.deleted = deleted;
+    }
+
+    /**
+     * Gets the object type.
+     *
+     * @return The object type.
+     */
+    public String getObject() {
+        return object;
+    }
+
+    /**
+     * Sets the object type.
+     *
+     * @param object The object type.
+     */
+    public void setObject(String object) {
+        this.object = object;
+    }
+
+    /**
+     * Gets the ID of the deleted template.
+     *
+     * @return The ID of the deleted template.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the deleted template.
+     *
+     * @param id The ID of the deleted template.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    /**
+     * Gets whether the template was deleted.
+     *
+     * @return Whether the template was deleted.
+     */
+    public Boolean getDeleted() {
+        return deleted;
+    }
+
+    /**
+     * Sets whether the template was deleted.
+     *
+     * @param deleted Whether the template was deleted.
+     */
+    public void setDeleted(Boolean deleted) {
+        this.deleted = deleted;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/DuplicateTemplateResponseSuccess.java b/src/main/java/com/resend/services/templates/model/DuplicateTemplateResponseSuccess.java
new file mode 100644
index 0000000..df89fe7
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/DuplicateTemplateResponseSuccess.java
@@ -0,0 +1,68 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Represents the response from duplicating a template.
+ */
+public class DuplicateTemplateResponseSuccess {
+
+    @JsonProperty("object")
+    private String object;
+
+    @JsonProperty("id")
+    private String id;
+
+    /**
+     * Default constructor.
+     */
+    public DuplicateTemplateResponseSuccess() {
+    }
+
+    /**
+     * Constructs a DuplicateTemplateResponse with the specified attributes.
+     *
+     * @param object The object type.
+     * @param id     The ID of the duplicated template.
+     */
+    public DuplicateTemplateResponseSuccess(String object, String id) {
+        this.object = object;
+        this.id = id;
+    }
+
+    /**
+     * Gets the object type.
+     *
+     * @return The object type.
+     */
+    public String getObject() {
+        return object;
+    }
+
+    /**
+     * Sets the object type.
+     *
+     * @param object The object type.
+     */
+    public void setObject(String object) {
+        this.object = object;
+    }
+
+    /**
+     * Gets the ID of the duplicated template.
+     *
+     * @return The ID of the duplicated template.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the duplicated template.
+     *
+     * @param id The ID of the duplicated template.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/GetTemplateResponseSuccess.java b/src/main/java/com/resend/services/templates/model/GetTemplateResponseSuccess.java
new file mode 100644
index 0000000..7935416
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/GetTemplateResponseSuccess.java
@@ -0,0 +1,311 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.List;
+
+/**
+ * Represents a complete template object.
+ */
+public class GetTemplateResponseSuccess {
+
+    @JsonProperty("object")
+    private String object;
+
+    @JsonProperty("id")
+    private String id;
+
+    @JsonProperty("alias")
+    private String alias;
+
+    @JsonProperty("name")
+    private String name;
+
+    @JsonProperty("created_at")
+    private String createdAt;
+
+    @JsonProperty("updated_at")
+    private String updatedAt;
+
+    @JsonProperty("status")
+    private String status;
+
+    @JsonProperty("published_at")
+    private String publishedAt;
+
+    @JsonProperty("from")
+    private String from;
+
+    @JsonProperty("subject")
+    private String subject;
+
+    @JsonProperty("reply_to")
+    private List<String> replyTo;
+
+    @JsonProperty("html")
+    private String html;
+
+    @JsonProperty("text")
+    private String text;
+
+    @JsonProperty("variables")
+    private List<Variable> variables;
+
+    /**
+     * Default constructor.
+     */
+    public GetTemplateResponseSuccess() {
+    }
+
+    /**
+     * Gets the object type.
+     *
+     * @return The object type.
+     */
+    public String getObject() {
+        return object;
+    }
+
+    /**
+     * Sets the object type.
+     *
+     * @param object The object type.
+     */
+    public void setObject(String object) {
+        this.object = object;
+    }
+
+    /**
+     * Gets the ID of the template.
+     *
+     * @return The ID of the template.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the template.
+     *
+     * @param id The ID of the template.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    /**
+     * Gets the alias of the template.
+     *
+     * @return The alias of the template.
+     */
+    public String getAlias() {
+        return alias;
+    }
+
+    /**
+     * Sets the alias of the template.
+     *
+     * @param alias The alias of the template.
+     */
+    public void setAlias(String alias) {
+        this.alias = alias;
+    }
+
+    /**
+     * Gets the name of the template.
+     *
+     * @return The name of the template.
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Sets the name of the template.
+     *
+     * @param name The name of the template.
+     */
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    /**
+     * Gets the creation timestamp of the template.
+     *
+     * @return The creation timestamp.
+     */
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    /**
+     * Sets the creation timestamp of the template.
+     *
+     * @param createdAt The creation timestamp.
+     */
+    public void setCreatedAt(String createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    /**
+     * Gets the last update timestamp of the template.
+     *
+     * @return The last update timestamp.
+     */
+    public String getUpdatedAt() {
+        return updatedAt;
+    }
+
+    /**
+     * Sets the last update timestamp of the template.
+     *
+     * @param updatedAt The last update timestamp.
+     */
+    public void setUpdatedAt(String updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    /**
+     * Gets the status of the template.
+     *
+     * @return The status of the template.
+     */
+    public String getStatus() {
+        return status;
+    }
+
+    /**
+     * Sets the status of the template.
+     *
+     * @param status The status of the template.
+     */
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    /**
+     * Gets the publication timestamp of the template.
+     *
+     * @return The publication timestamp.
+     */
+    public String getPublishedAt() {
+        return publishedAt;
+    }
+
+    /**
+     * Sets the publication timestamp of the template.
+     *
+     * @param publishedAt The publication timestamp.
+     */
+    public void setPublishedAt(String publishedAt) {
+        this.publishedAt = publishedAt;
+    }
+
+    /**
+     * Gets the sender email address.
+     *
+     * @return The sender email address.
+     */
+    public String getFrom() {
+        return from;
+    }
+
+    /**
+     * Sets the sender email address.
+     *
+     * @param from The sender email address.
+     */
+    public void setFrom(String from) {
+        this.from = from;
+    }
+
+    /**
+     * Gets the email subject.
+     *
+     * @return The email subject.
+     */
+    public String getSubject() {
+        return subject;
+    }
+
+    /**
+     * Sets the email subject.
+     *
+     * @param subject The email subject.
+     */
+    public void setSubject(String subject) {
+        this.subject = subject;
+    }
+
+    /**
+     * Gets the reply-to email addresses.
+     *
+     * @return The reply-to email addresses.
+     */
+    public List<String> getReplyTo() {
+        return replyTo;
+    }
+
+    /**
+     * Sets the reply-to email addresses.
+     *
+     * @param replyTo The reply-to email addresses.
+     */
+    public void setReplyTo(List<String> replyTo) {
+        this.replyTo = replyTo;
+    }
+
+    /**
+     * Gets the HTML version of the template.
+     *
+     * @return The HTML version of the template.
+     */
+    public String getHtml() {
+        return html;
+    }
+
+    /**
+     * Sets the HTML version of the template.
+     *
+     * @param html The HTML version of the template.
+     */
+    public void setHtml(String html) {
+        this.html = html;
+    }
+
+    /**
+     * Gets the plain text version of the template.
+     *
+     * @return The plain text version of the template.
+     */
+    public String getText() {
+        return text;
+    }
+
+    /**
+     * Sets the plain text version of the template.
+     *
+     * @param text The plain text version of the template.
+     */
+    public void setText(String text) {
+        this.text = text;
+    }
+
+    /**
+     * Gets the list of variables used in the template.
+     *
+     * @return The list of variables.
+     */
+    public List<Variable> getVariables() {
+        return variables;
+    }
+
+    /**
+     * Sets the list of variables used in the template.
+     *
+     * @param variables The list of variables.
+     */
+    public void setVariables(List<Variable> variables) {
+        this.variables = variables;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/ListTemplatesResponseSuccess.java b/src/main/java/com/resend/services/templates/model/ListTemplatesResponseSuccess.java
new file mode 100644
index 0000000..4278a2b
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/ListTemplatesResponseSuccess.java
@@ -0,0 +1,93 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.List;
+
+/**
+ * Represents the response from listing templates.
+ */
+public class ListTemplatesResponseSuccess {
+
+    @JsonProperty("object")
+    private String object;
+
+    @JsonProperty("data")
+    private List<TemplateListItem> data;
+
+    @JsonProperty("has_more")
+    private Boolean hasMore;
+
+    /**
+     * Default constructor.
+     */
+    public ListTemplatesResponseSuccess() {
+    }
+
+    /**
+     * Constructs a ListTemplatesResponse with the specified attributes.
+     *
+     * @param object  The object type.
+     * @param data    The list of templates.
+     * @param hasMore Whether there are more templates available.
+     */
+    public ListTemplatesResponseSuccess(String object, List<TemplateListItem> data, Boolean hasMore) {
+        this.object = object;
+        this.data = data;
+        this.hasMore = hasMore;
+    }
+
+    /**
+     * Gets the object type.
+     *
+     * @return The object type.
+     */
+    public String getObject() {
+        return object;
+    }
+
+    /**
+     * Sets the object type.
+     *
+     * @param object The object type.
+     */
+    public void setObject(String object) {
+        this.object = object;
+    }
+
+    /**
+     * Gets the list of templates.
+     *
+     * @return The list of templates.
+     */
+    public List<TemplateListItem> getData() {
+        return data;
+    }
+
+    /**
+     * Sets the list of templates.
+     *
+     * @param data The list of templates.
+     */
+    public void setData(List<TemplateListItem> data) {
+        this.data = data;
+    }
+
+    /**
+     * Gets whether there are more templates available.
+     *
+     * @return Whether there are more templates available.
+     */
+    public Boolean getHasMore() {
+        return hasMore;
+    }
+
+    /**
+     * Sets whether there are more templates available.
+     *
+     * @param hasMore Whether there are more templates available.
+     */
+    public void setHasMore(Boolean hasMore) {
+        this.hasMore = hasMore;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/PublishTemplateResponseSuccess.java b/src/main/java/com/resend/services/templates/model/PublishTemplateResponseSuccess.java
new file mode 100644
index 0000000..41d45ca
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/PublishTemplateResponseSuccess.java
@@ -0,0 +1,68 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Represents the response from publishing a template.
+ */
+public class PublishTemplateResponseSuccess {
+
+    @JsonProperty("id")
+    private String id;
+
+    @JsonProperty("object")
+    private String object;
+
+    /**
+     * Default constructor.
+     */
+    public PublishTemplateResponseSuccess() {
+    }
+
+    /**
+     * Constructs a PublishTemplateResponse with the specified attributes.
+     *
+     * @param id     The ID of the published template.
+     * @param object The object type.
+     */
+    public PublishTemplateResponseSuccess(String id, String object) {
+        this.id = id;
+        this.object = object;
+    }
+
+    /**
+     * Gets the ID of the published template.
+     *
+     * @return The ID of the published template.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the published template.
+     *
+     * @param id The ID of the published template.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    /**
+     * Gets the object type.
+     *
+     * @return The object type.
+     */
+    public String getObject() {
+        return object;
+    }
+
+    /**
+     * Sets the object type.
+     *
+     * @param object The object type.
+     */
+    public void setObject(String object) {
+        this.object = object;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/TemplateListItem.java b/src/main/java/com/resend/services/templates/model/TemplateListItem.java
new file mode 100644
index 0000000..951084a
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/TemplateListItem.java
@@ -0,0 +1,162 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Represents a template item in a list response.
+ */
+public class TemplateListItem {
+
+    @JsonProperty("id")
+    private String id;
+
+    @JsonProperty("name")
+    private String name;
+
+    @JsonProperty("status")
+    private String status;
+
+    @JsonProperty("published_at")
+    private String publishedAt;
+
+    @JsonProperty("created_at")
+    private String createdAt;
+
+    @JsonProperty("updated_at")
+    private String updatedAt;
+
+    @JsonProperty("alias")
+    private String alias;
+
+    /**
+     * Default constructor.
+     */
+    public TemplateListItem() {
+    }
+
+    /**
+     * Gets the ID of the template.
+     *
+     * @return The ID of the template.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the template.
+     *
+     * @param id The ID of the template.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    /**
+     * Gets the name of the template.
+     *
+     * @return The name of the template.
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Sets the name of the template.
+     *
+     * @param name The name of the template.
+     */
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    /**
+     * Gets the status of the template.
+     *
+     * @return The status of the template.
+     */
+    public String getStatus() {
+        return status;
+    }
+
+    /**
+     * Sets the status of the template.
+     *
+     * @param status The status of the template.
+     */
+    public void setStatus(String status) {
+        this.status = status;
+    }
+
+    /**
+     * Gets the publication timestamp of the template.
+     *
+     * @return The publication timestamp.
+     */
+    public String getPublishedAt() {
+        return publishedAt;
+    }
+
+    /**
+     * Sets the publication timestamp of the template.
+     *
+     * @param publishedAt The publication timestamp.
+     */
+    public void setPublishedAt(String publishedAt) {
+        this.publishedAt = publishedAt;
+    }
+
+    /**
+     * Gets the creation timestamp of the template.
+     *
+     * @return The creation timestamp.
+     */
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    /**
+     * Sets the creation timestamp of the template.
+     *
+     * @param createdAt The creation timestamp.
+     */
+    public void setCreatedAt(String createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    /**
+     * Gets the last update timestamp of the template.
+     *
+     * @return The last update timestamp.
+     */
+    public String getUpdatedAt() {
+        return updatedAt;
+    }
+
+    /**
+     * Sets the last update timestamp of the template.
+     *
+     * @param updatedAt The last update timestamp.
+     */
+    public void setUpdatedAt(String updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    /**
+     * Gets the alias of the template.
+     *
+     * @return The alias of the template.
+     */
+    public String getAlias() {
+        return alias;
+    }
+
+    /**
+     * Sets the alias of the template.
+     *
+     * @param alias The alias of the template.
+     */
+    public void setAlias(String alias) {
+        this.alias = alias;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/UpdateTemplateOptions.java b/src/main/java/com/resend/services/templates/model/UpdateTemplateOptions.java
new file mode 100644
index 0000000..e643108
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/UpdateTemplateOptions.java
@@ -0,0 +1,301 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Represents options for updating a template.
+ */
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class UpdateTemplateOptions {
+
+    @JsonProperty("name")
+    private final String name;
+
+    @JsonProperty("alias")
+    private final String alias;
+
+    @JsonProperty("from")
+    private final String from;
+
+    @JsonProperty("subject")
+    private final String subject;
+
+    @JsonProperty("reply_to")
+    private final List<String> replyTo;
+
+    @JsonProperty("html")
+    private final String html;
+
+    @JsonProperty("text")
+    private final String text;
+
+    @JsonProperty("variables")
+    private final List<Variable> variables;
+
+    private UpdateTemplateOptions(Builder builder) {
+        this.name = builder.name;
+        this.alias = builder.alias;
+        this.from = builder.from;
+        this.subject = builder.subject;
+        this.replyTo = builder.replyTo;
+        this.html = builder.html;
+        this.text = builder.text;
+        this.variables = builder.variables;
+    }
+
+    /**
+     * Gets the name of the template.
+     *
+     * @return The name of the template.
+     */
+    public String getName() {
+        return name;
+    }
+
+    /**
+     * Gets the alias of the template.
+     *
+     * @return The alias of the template.
+     */
+    public String getAlias() {
+        return alias;
+    }
+
+    /**
+     * Gets the sender email address.
+     *
+     * @return The sender email address.
+     */
+    public String getFrom() {
+        return from;
+    }
+
+    /**
+     * Gets the email subject.
+     *
+     * @return The email subject.
+     */
+    public String getSubject() {
+        return subject;
+    }
+
+    /**
+     * Gets the reply-to email addresses.
+     *
+     * @return The reply-to email addresses.
+     */
+    public List<String> getReplyTo() {
+        return replyTo;
+    }
+
+    /**
+     * Gets the HTML version of the template.
+     *
+     * @return The HTML version of the template.
+     */
+    public String getHtml() {
+        return html;
+    }
+
+    /**
+     * Gets the plain text version of the template.
+     *
+     * @return The plain text version of the template.
+     */
+    public String getText() {
+        return text;
+    }
+
+    /**
+     * Gets the list of variables used in the template.
+     *
+     * @return The list of variables.
+     */
+    public List<Variable> getVariables() {
+        return variables;
+    }
+
+    /**
+     * Creates a new builder instance to construct UpdateTemplateOptions.
+     *
+     * @return A new builder instance.
+     */
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    /**
+     * Builder class for constructing UpdateTemplateOptions instances.
+     */
+    public static class Builder {
+        private String name;
+        private String alias;
+        private String from;
+        private String subject;
+        private List<String> replyTo;
+        private String html;
+        private String text;
+        private List<Variable> variables;
+
+        /**
+         * Sets the name of the template.
+         *
+         * @param name The name of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder name(String name) {
+            this.name = name;
+            return this;
+        }
+
+        /**
+         * Sets the alias of the template.
+         *
+         * @param alias The alias of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder alias(String alias) {
+            this.alias = alias;
+            return this;
+        }
+
+        /**
+         * Sets the sender email address.
+         *
+         * @param from The sender email address.
+         * @return This builder instance for method chaining.
+         */
+        public Builder from(String from) {
+            this.from = from;
+            return this;
+        }
+
+        /**
+         * Sets the email subject.
+         *
+         * @param subject The email subject.
+         * @return This builder instance for method chaining.
+         */
+        public Builder subject(String subject) {
+            this.subject = subject;
+            return this;
+        }
+
+        /**
+         * Sets the reply-to email addresses.
+         *
+         * @param replyTo The reply-to email addresses.
+         * @return This builder instance for method chaining.
+         */
+        public Builder replyTo(String... replyTo) {
+            if (this.replyTo == null) {
+                this.replyTo = new ArrayList<>();
+            }
+            for (String email : replyTo) {
+                this.replyTo.add(email);
+            }
+            return this;
+        }
+
+        /**
+         * Sets the reply-to email addresses.
+         *
+         * @param replyTo The reply-to email addresses.
+         * @return This builder instance for method chaining.
+         */
+        public Builder replyTo(List<String> replyTo) {
+            this.replyTo = replyTo;
+            return this;
+        }
+
+        /**
+         * Adds a single reply-to email address.
+         *
+         * @param email The reply-to email address to add.
+         * @return This builder instance for method chaining.
+         */
+        public Builder addReplyTo(String email) {
+            if (this.replyTo == null) {
+                this.replyTo = new ArrayList<>();
+            }
+            this.replyTo.add(email);
+            return this;
+        }
+
+        /**
+         * Sets the HTML version of the template.
+         *
+         * @param html The HTML version of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder html(String html) {
+            this.html = html;
+            return this;
+        }
+
+        /**
+         * Sets the plain text version of the template.
+         *
+         * @param text The plain text version of the template.
+         * @return This builder instance for method chaining.
+         */
+        public Builder text(String text) {
+            this.text = text;
+            return this;
+        }
+
+        /**
+         * Sets the list of variables used in the template.
+         *
+         * @param variables The list of variables.
+         * @return This builder instance for method chaining.
+         */
+        public Builder variables(Variable... variables) {
+            if (this.variables == null) {
+                this.variables = new ArrayList<>();
+            }
+            for (Variable variable : variables) {
+                this.variables.add(variable);
+            }
+            return this;
+        }
+
+        /**
+         * Sets the list of variables used in the template.
+         *
+         * @param variables The list of variables.
+         * @return This builder instance for method chaining.
+         */
+        public Builder variables(List<Variable> variables) {
+            this.variables = variables;
+            return this;
+        }
+
+        /**
+         * Adds a single variable to the template.
+         *
+         * @param variable The variable to add.
+         * @return This builder instance for method chaining.
+         */
+        public Builder addVariable(Variable variable) {
+            if (this.variables == null) {
+                this.variables = new ArrayList<>();
+            }
+            this.variables.add(variable);
+            return this;
+        }
+
+        /**
+         * Builds and returns an UpdateTemplateOptions instance.
+         *
+         * @return An UpdateTemplateOptions instance.
+         */
+        public UpdateTemplateOptions build() {
+            return new UpdateTemplateOptions(this);
+        }
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/UpdateTemplateResponseSuccess.java b/src/main/java/com/resend/services/templates/model/UpdateTemplateResponseSuccess.java
new file mode 100644
index 0000000..e278fe4
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/UpdateTemplateResponseSuccess.java
@@ -0,0 +1,68 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Represents the response from updating a template.
+ */
+public class UpdateTemplateResponseSuccess {
+
+    @JsonProperty("id")
+    private String id;
+
+    @JsonProperty("object")
+    private String object;
+
+    /**
+     * Default constructor.
+     */
+    public UpdateTemplateResponseSuccess() {
+    }
+
+    /**
+     * Constructs an UpdateTemplateResponse with the specified attributes.
+     *
+     * @param id     The ID of the updated template.
+     * @param object The object type.
+     */
+    public UpdateTemplateResponseSuccess(String id, String object) {
+        this.id = id;
+        this.object = object;
+    }
+
+    /**
+     * Gets the ID of the updated template.
+     *
+     * @return The ID of the updated template.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the updated template.
+     *
+     * @param id The ID of the updated template.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    /**
+     * Gets the object type.
+     *
+     * @return The object type.
+     */
+    public String getObject() {
+        return object;
+    }
+
+    /**
+     * Sets the object type.
+     *
+     * @param object The object type.
+     */
+    public void setObject(String object) {
+        this.object = object;
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/Variable.java b/src/main/java/com/resend/services/templates/model/Variable.java
new file mode 100644
index 0000000..b4627f1
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/Variable.java
@@ -0,0 +1,231 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Represents a variable in a template.
+ */
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public class Variable {
+
+    @JsonProperty("id")
+    private String id;
+
+    @JsonProperty("key")
+    private String key;
+
+    @JsonProperty("type")
+    private VariableType type;
+
+    @JsonProperty("fallback_value")
+    private Object fallbackValue;
+
+    @JsonProperty("created_at")
+    private String createdAt;
+
+    @JsonProperty("updated_at")
+    private String updatedAt;
+
+    /**
+     * Default constructor.
+     */
+    public Variable() {
+    }
+
+    /**
+     * Constructs a Variable with the specified key and type.
+     *
+     * @param key  The key of the variable.
+     * @param type The type of the variable.
+     */
+    public Variable(String key, VariableType type) {
+        this.key = key;
+        this.type = type;
+    }
+
+    /**
+     * Constructs a Variable with the specified key, type, and fallback value.
+     *
+     * @param key           The key of the variable.
+     * @param type          The type of the variable.
+     * @param fallbackValue The fallback value of the variable.
+     */
+    public Variable(String key, VariableType type, Object fallbackValue) {
+        this.key = key;
+        this.type = type;
+        this.fallbackValue = fallbackValue;
+    }
+
+    /**
+     * Gets the ID of the variable.
+     *
+     * @return The ID of the variable.
+     */
+    public String getId() {
+        return id;
+    }
+
+    /**
+     * Sets the ID of the variable.
+     *
+     * @param id The ID of the variable.
+     */
+    public void setId(String id) {
+        this.id = id;
+    }
+
+    /**
+     * Gets the key of the variable.
+     *
+     * @return The key of the variable.
+     */
+    public String getKey() {
+        return key;
+    }
+
+    /**
+     * Sets the key of the variable.
+     *
+     * @param key The key of the variable.
+     */
+    public void setKey(String key) {
+        this.key = key;
+    }
+
+    /**
+     * Gets the type of the variable.
+     *
+     * @return The type of the variable.
+     */
+    public VariableType getType() {
+        return type;
+    }
+
+    /**
+     * Sets the type of the variable.
+     *
+     * @param type The type of the variable.
+     */
+    public void setType(VariableType type) {
+        this.type = type;
+    }
+
+    /**
+     * Gets the fallback value of the variable.
+     *
+     * @return The fallback value of the variable.
+     */
+    public Object getFallbackValue() {
+        return fallbackValue;
+    }
+
+    /**
+     * Sets the fallback value of the variable.
+     *
+     * @param fallbackValue The fallback value of the variable.
+     */
+    public void setFallbackValue(Object fallbackValue) {
+        this.fallbackValue = fallbackValue;
+    }
+
+    /**
+     * Gets the creation timestamp of the variable.
+     *
+     * @return The creation timestamp.
+     */
+    public String getCreatedAt() {
+        return createdAt;
+    }
+
+    /**
+     * Sets the creation timestamp of the variable.
+     *
+     * @param createdAt The creation timestamp.
+     */
+    public void setCreatedAt(String createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    /**
+     * Gets the last update timestamp of the variable.
+     *
+     * @return The last update timestamp.
+     */
+    public String getUpdatedAt() {
+        return updatedAt;
+    }
+
+    /**
+     * Sets the last update timestamp of the variable.
+     *
+     * @param updatedAt The last update timestamp.
+     */
+    public void setUpdatedAt(String updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    /**
+     * Creates a new builder instance to construct Variable.
+     *
+     * @return A new builder instance.
+     */
+    public static Builder builder() {
+        return new Builder();
+    }
+
+    /**
+     * Builder class for constructing Variable instances.
+     */
+    public static class Builder {
+        private String key;
+        private VariableType type;
+        private Object fallbackValue;
+
+        /**
+         * Sets the key of the variable.
+         *
+         * @param key The key of the variable.
+         * @return This builder instance for method chaining.
+         */
+        public Builder key(String key) {
+            this.key = key;
+            return this;
+        }
+
+        /**
+         * Sets the type of the variable.
+         *
+         * @param type The type of the variable.
+         * @return This builder instance for method chaining.
+         */
+        public Builder type(VariableType type) {
+            this.type = type;
+            return this;
+        }
+
+        /**
+         * Sets the fallback value of the variable.
+         *
+         * @param fallbackValue The fallback value of the variable.
+         * @return This builder instance for method chaining.
+         */
+        public Builder fallbackValue(Object fallbackValue) {
+            this.fallbackValue = fallbackValue;
+            return this;
+        }
+
+        /**
+         * Builds and returns a Variable instance.
+         *
+         * @return A Variable instance.
+         */
+        public Variable build() {
+            Variable variable = new Variable();
+            variable.key = this.key;
+            variable.type = this.type;
+            variable.fallbackValue = this.fallbackValue;
+            return variable;
+        }
+    }
+}
diff --git a/src/main/java/com/resend/services/templates/model/VariableType.java b/src/main/java/com/resend/services/templates/model/VariableType.java
new file mode 100644
index 0000000..0699898
--- /dev/null
+++ b/src/main/java/com/resend/services/templates/model/VariableType.java
@@ -0,0 +1,34 @@
+package com.resend.services.templates.model;
+
+import com.fasterxml.jackson.annotation.JsonValue;
+
+/**
+ * Enum representing the type of a template variable.
+ */
+public enum VariableType {
+    /**
+     * String type variable.
+     */
+    STRING("string"),
+
+    /**
+     * Number type variable.
+     */
+    NUMBER("number");
+
+    private final String value;
+
+    VariableType(String value) {
+        this.value = value;
+    }
+
+    /**
+     * Gets the string value of the variable type.
+     *
+     * @return The string value.
+     */
+    @JsonValue
+    public String getValue() {
+        return value;
+    }
+}
diff --git a/src/test/java/com/resend/services/templates/TemplatesTest.java b/src/test/java/com/resend/services/templates/TemplatesTest.java
new file mode 100644
index 0000000..c85e0b1
--- /dev/null
+++ b/src/test/java/com/resend/services/templates/TemplatesTest.java
@@ -0,0 +1,166 @@
+package com.resend.services.templates;
+
+import com.resend.core.exception.ResendException;
+import com.resend.core.net.ListParams;
+import com.resend.services.templates.model.*;
+import com.resend.services.util.TemplatesUtil;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.mockito.Mockito.*;
+
+/**
+ * Unit tests for the Templates service.
+ */
+public class TemplatesTest {
+
+    @Mock
+    private Templates templates;
+
+    @BeforeEach
+    public void setUp() {
+        MockitoAnnotations.openMocks(this);
+        templates = mock(Templates.class);
+    }
+
+    @Test
+    public void testCreateTemplate_Success() throws ResendException {
+        CreateTemplateOptions createOptions = TemplatesUtil.createTemplateOptions();
+        CreateTemplateResponseSuccess expectedResponse = TemplatesUtil.createTemplateResponse();
+
+        when(templates.create(createOptions)).thenReturn(expectedResponse);
+
+        CreateTemplateResponseSuccess response = templates.create(createOptions);
+
+        assertNotNull(response);
+        assertEquals(expectedResponse.getId(), response.getId());
+        assertEquals(expectedResponse.getObject(), response.getObject());
+        verify(templates, times(1)).create(createOptions);
+    }
+
+    @Test
+    public void testGetTemplate_Success() throws ResendException {
+        String templateId = "34a080c9-b17d-4187-ad80-5af20266e535";
+        GetTemplateResponseSuccess expectedTemplate = TemplatesUtil.createTemplate();
+
+        when(templates.get(templateId)).thenReturn(expectedTemplate);
+
+        GetTemplateResponseSuccess retrievedTemplate = templates.get(templateId);
+
+        assertNotNull(retrievedTemplate);
+        assertEquals(expectedTemplate.getId(), retrievedTemplate.getId());
+        assertEquals(expectedTemplate.getName(), retrievedTemplate.getName());
+        assertEquals(expectedTemplate.getStatus(), retrievedTemplate.getStatus());
+        verify(templates, times(1)).get(templateId);
+    }
+
+    @Test
+    public void testGetTemplateByAlias_Success() throws ResendException {
+        String alias = "reset-password";
+        GetTemplateResponseSuccess expectedTemplate = TemplatesUtil.createTemplate();
+
+        when(templates.get(alias)).thenReturn(expectedTemplate);
+
+        GetTemplateResponseSuccess retrievedTemplate = templates.get(alias);
+
+        assertNotNull(retrievedTemplate);
+        assertEquals(expectedTemplate.getAlias(), retrievedTemplate.getAlias());
+        verify(templates, times(1)).get(alias);
+    }
+
+    @Test
+    public void testListTemplates_Success() throws ResendException {
+        ListTemplatesResponseSuccess expectedResponse = TemplatesUtil.listTemplatesResponse();
+
+        when(templates.list()).thenReturn(expectedResponse);
+
+        ListTemplatesResponseSuccess response = templates.list();
+
+        assertNotNull(response);
+        assertEquals(expectedResponse.getData().size(), response.getData().size());
+        assertEquals(expectedResponse.getHasMore(), response.getHasMore());
+        verify(templates, times(1)).list();
+    }
+
+    @Test
+    public void testListTemplatesWithPagination_Success() throws ResendException {
+        ListParams params = ListParams.builder()
+                .limit(2)
+                .after("34a080c9-b17d-4187-ad80-5af20266e535")
+                .build();
+        ListTemplatesResponseSuccess expectedResponse = TemplatesUtil.listTemplatesResponse();
+
+        when(templates.list(params)).thenReturn(expectedResponse);
+
+        ListTemplatesResponseSuccess response = templates.list(params);
+
+        assertNotNull(response);
+        assertEquals(expectedResponse.getData().size(), response.getData().size());
+        verify(templates, times(1)).list(params);
+    }
+
+    @Test
+    public void testUpdateTemplate_Success() throws ResendException {
+        String templateId = "34a080c9-b17d-4187-ad80-5af20266e535";
+        UpdateTemplateOptions updateOptions = TemplatesUtil.updateTemplateOptions();
+        UpdateTemplateResponseSuccess expectedResponse = TemplatesUtil.updateTemplateResponse();
+
+        when(templates.update(templateId, updateOptions)).thenReturn(expectedResponse);
+
+        UpdateTemplateResponseSuccess response = templates.update(templateId, updateOptions);
+
+        assertNotNull(response);
+        assertEquals(expectedResponse.getId(), response.getId());
+        assertEquals(expectedResponse.getObject(), response.getObject());
+        verify(templates, times(1)).update(templateId, updateOptions);
+    }
+
+    @Test
+    public void testDeleteTemplate_Success() throws ResendException {
+        String templateId = "34a080c9-b17d-4187-ad80-5af20266e535";
+        DeleteTemplateResponseSuccess expectedResponse = TemplatesUtil.deleteTemplateResponse();
+
+        when(templates.remove(templateId)).thenReturn(expectedResponse);
+
+        DeleteTemplateResponseSuccess response = templates.remove(templateId);
+
+        assertNotNull(response);
+        assertEquals(expectedResponse.getId(), response.getId());
+        assertEquals(expectedResponse.getDeleted(), response.getDeleted());
+        verify(templates, times(1)).remove(templateId);
+    }
+
+    @Test
+    public void testDuplicateTemplate_Success() throws ResendException {
+        String templateId = "34a080c9-b17d-4187-ad80-5af20266e535";
+        DuplicateTemplateResponseSuccess expectedResponse = TemplatesUtil.duplicateTemplateResponse();
+
+        when(templates.duplicate(templateId)).thenReturn(expectedResponse);
+
+        DuplicateTemplateResponseSuccess response = templates.duplicate(templateId);
+
+        assertNotNull(response);
+        assertEquals(expectedResponse.getId(), response.getId());
+        assertEquals(expectedResponse.getObject(), response.getObject());
+        verify(templates, times(1)).duplicate(templateId);
+    }
+
+    @Test
+    public void testPublishTemplate_Success() throws ResendException {
+        String templateId = "34a080c9-b17d-4187-ad80-5af20266e535";
+        PublishTemplateResponseSuccess expectedResponse = TemplatesUtil.publishTemplateResponse();
+
+        when(templates.publish(templateId)).thenReturn(expectedResponse);
+
+        PublishTemplateResponseSuccess response = templates.publish(templateId);
+
+        assertNotNull(response);
+        assertEquals(expectedResponse.getId(), response.getId());
+        assertEquals(expectedResponse.getObject(), response.getObject());
+        verify(templates, times(1)).publish(templateId);
+    }
+}
diff --git a/src/test/java/com/resend/services/util/TemplatesUtil.java b/src/test/java/com/resend/services/util/TemplatesUtil.java
new file mode 100644
index 0000000..60e8703
--- /dev/null
+++ b/src/test/java/com/resend/services/util/TemplatesUtil.java
@@ -0,0 +1,215 @@
+package com.resend.services.util;
+
+import com.resend.services.templates.model.*;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Utility class for creating test data for Templates service.
+ */
+public class TemplatesUtil {
+
+    /**
+     * Creates a test Variable.
+     *
+     * @return A Variable instance for testing.
+     */
+    public static Variable createVariable() {
+        return Variable.builder()
+                .key("NAME")
+                .type(VariableType.STRING)
+                .fallbackValue("user")
+                .build();
+    }
+
+    /**
+     * Creates a test Variable with number type.
+     *
+     * @return A Variable instance for testing.
+     */
+    public static Variable createNumberVariable() {
+        return Variable.builder()
+                .key("AGE")
+                .type(VariableType.NUMBER)
+                .fallbackValue(25)
+                .build();
+    }
+
+    /**
+     * Creates a test Variable without fallback value.
+     *
+     * @return A Variable instance for testing.
+     */
+    public static Variable createVariableWithoutFallback() {
+        return Variable.builder()
+                .key("OPTIONAL_VARIABLE")
+                .type(VariableType.STRING)
+                .build();
+    }
+
+    /**
+     * Creates test CreateTemplateOptions.
+     *
+     * @return A CreateTemplateOptions instance for testing.
+     */
+    public static CreateTemplateOptions createTemplateOptions() {
+        return CreateTemplateOptions.builder()
+                .name("welcome-email")
+                .alias("welcome-email-alias")
+                .from("John Doe <john.doe@example.com>")
+                .subject("Welcome to our service")
+                .replyTo("support@example.com")
+                .html("<strong>Hey, {{{NAME}}}, you are {{{AGE}}} years old.</strong>")
+                .text("Hey, NAME, you are AGE years old.")
+                .variables(Arrays.asList(createVariable(), createNumberVariable(), createVariableWithoutFallback()))
+                .build();
+    }
+
+    /**
+     * Creates test UpdateTemplateOptions.
+     *
+     * @return An UpdateTemplateOptions instance for testing.
+     */
+    public static UpdateTemplateOptions updateTemplateOptions() {
+        return UpdateTemplateOptions.builder()
+                .name("updated-welcome-email")
+                .html("<strong>Hello, {{{NAME}}}</strong>")
+                .build();
+    }
+
+    /**
+     * Creates a test CreateTemplateResponse.
+     *
+     * @return A CreateTemplateResponse instance for testing.
+     */
+    public static CreateTemplateResponseSuccess createTemplateResponse() {
+        return new CreateTemplateResponseSuccess("49a3999c-0ce1-4ea6-ab68-afcd6dc2e794", "template");
+    }
+
+    /**
+     * Creates a test DeleteTemplateResponse.
+     *
+     * @return A DeleteTemplateResponse instance for testing.
+     */
+    public static DeleteTemplateResponseSuccess deleteTemplateResponse() {
+        return new DeleteTemplateResponseSuccess("template", "34a080c9-b17d-4187-ad80-5af20266e535", true);
+    }
+
+    /**
+     * Creates a test DuplicateTemplateResponse.
+     *
+     * @return A DuplicateTemplateResponse instance for testing.
+     */
+    public static DuplicateTemplateResponseSuccess duplicateTemplateResponse() {
+        return new DuplicateTemplateResponseSuccess("template", "e169aa45-1ecf-4183-9955-b1499d5701d3");
+    }
+
+    /**
+     * Creates a test PublishTemplateResponse.
+     *
+     * @return A PublishTemplateResponse instance for testing.
+     */
+    public static PublishTemplateResponseSuccess publishTemplateResponse() {
+        return new PublishTemplateResponseSuccess("34a080c9-b17d-4187-ad80-5af20266e535", "template");
+    }
+
+    /**
+     * Creates a test UpdateTemplateResponse.
+     *
+     * @return An UpdateTemplateResponse instance for testing.
+     */
+    public static UpdateTemplateResponseSuccess updateTemplateResponse() {
+        return new UpdateTemplateResponseSuccess("34a080c9-b17d-4187-ad80-5af20266e535", "template");
+    }
+
+    /**
+     * Creates a test Template.
+     *
+     * @return A Template instance for testing.
+     */
+    public static GetTemplateResponseSuccess createTemplate() {
+        GetTemplateResponseSuccess template = new GetTemplateResponseSuccess();
+        template.setObject("template");
+        template.setId("34a080c9-b17d-4187-ad80-5af20266e535");
+        template.setAlias("reset-password");
+        template.setName("reset-password");
+        template.setCreatedAt("2023-10-06T23:47:56.678Z");
+        template.setUpdatedAt("2023-10-06T23:47:56.678Z");
+        template.setStatus("published");
+        template.setPublishedAt("2023-10-06T23:47:56.678Z");
+        template.setFrom("John Doe <john.doe@example.com>");
+        template.setSubject("Hello, world!");
+        template.setReplyTo(null);
+        template.setHtml("<h1>Hello, world!</h1>");
+        template.setText("Hello, world!");
+
+        Variable variable = new Variable();
+        variable.setId("e169aa45-1ecf-4183-9955-b1499d5701d3");
+        variable.setKey("user_name");
+        variable.setType(VariableType.STRING);
+        variable.setFallbackValue("John Doe");
+        variable.setCreatedAt("2023-10-06T23:47:56.678Z");
+        variable.setUpdatedAt("2023-10-06T23:47:56.678Z");
+
+        template.setVariables(Arrays.asList(variable));
+
+        return template;
+    }
+
+    /**
+     * Creates a test TemplateListItem.
+     *
+     * @return A TemplateListItem instance for testing.
+     */
+    public static TemplateListItem createTemplateListItem() {
+        TemplateListItem item = new TemplateListItem();
+        item.setId("e169aa45-1ecf-4183-9955-b1499d5701d3");
+        item.setName("reset-password");
+        item.setStatus("draft");
+        item.setPublishedAt(null);
+        item.setCreatedAt("2023-10-06T23:47:56.678Z");
+        item.setUpdatedAt("2023-10-06T23:47:56.678Z");
+        item.setAlias("reset-password");
+        return item;
+    }
+
+    /**
+     * Creates a second test TemplateListItem.
+     *
+     * @return A TemplateListItem instance for testing.
+     */
+    public static TemplateListItem createTemplateListItem2() {
+        TemplateListItem item = new TemplateListItem();
+        item.setId("b7f9c2e1-1234-4abc-9def-567890abcdef");
+        item.setName("welcome-message");
+        item.setStatus("published");
+        item.setPublishedAt("2023-10-06T23:47:56.678Z");
+        item.setCreatedAt("2023-10-06T23:47:56.678Z");
+        item.setUpdatedAt("2023-10-06T23:47:56.678Z");
+        item.setAlias("welcome-message");
+        return item;
+    }
+
+    /**
+     * Creates a list of test TemplateListItems.
+     *
+     * @return A list of TemplateListItem instances for testing.
+     */
+    public static List<TemplateListItem> createTemplateList() {
+        List<TemplateListItem> templates = new ArrayList<>();
+        templates.add(createTemplateListItem());
+        templates.add(createTemplateListItem2());
+        return templates;
+    }
+
+    /**
+     * Creates a test ListTemplatesResponse.
+     *
+     * @return A ListTemplatesResponse instance for testing.
+     */
+    public static ListTemplatesResponseSuccess listTemplatesResponse() {
+        return new ListTemplatesResponseSuccess("list", createTemplateList(), false);
+    }
+}