Add configuration option for email sender address apart from SMTP username

application/src/main/java/run/halo/app/notification/EmailNotifier.java

@@ -88,7 +88,7 @@ private static MimeMessagePreparator getMimeMessagePreparator(String toEmail,
         return mimeMessage -> {
             MimeMessageHelper helper =
                 new MimeMessageHelper(mimeMessage, true, StandardCharsets.UTF_8.name());
-            helper.setFrom(emailSenderConfig.getUsername(), emailSenderConfig.getDisplayName());
+            helper.setFrom(emailSenderConfig.getSender(), emailSenderConfig.getDisplayName());
 
             helper.setSubject(payload.getTitle());
             helper.setText(payload.getRawBody(), payload.getHtmlBody());
@@ -166,6 +166,7 @@ static class EmailSenderConfig {
         private String host;
         private Integer port;
         private String encryption;
+        private String sender;
 
         /**
          * Gets email display name.
@@ -175,5 +176,14 @@ static class EmailSenderConfig {
         public String getDisplayName() {
             return StringUtils.defaultIfBlank(displayName, username);
         }
+
+        /**
+         * Gets email sender address.
+         *
+         * @return sender if not blank, otherwise username.
+         */
+        public String getSender() {
+            return StringUtils.defaultIfBlank(sender, username);
+        }
     }
 }

application/src/main/resources/extensions/notification.yaml

@@ -28,6 +28,11 @@ spec:
           label: "用户名"
           name: username
           validation: required
+        - $formkit: text
+          if: "$enable"
+          label: "发信地址"
+          name: "sender"
+          help: "如果用户名为实际发信地址，可忽略"
         - $formkit: password
           if: "$enable"
           label: "密码"