diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 1ca1c7a..ea0d9f7 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -7,6 +7,7 @@ on:
   pull_request:
     branches:
       - master
+      - dev
 
 jobs:
   test:
diff --git a/README.md b/README.md
index 342f4df..4c534a5 100644
--- a/README.md
+++ b/README.md
@@ -99,57 +99,22 @@ class ExampleNotification extends Notification
 
 💡 Unless you set it explicitly, the **From** address will be set to `config('mail.from.address')` and the **To** value will be what returns from `$notifiable->routeNotificationFor('mail');`
 
-## Sandbox Mode
+### Enabling Sandbox Mode
 
-To enable sandbox mode you will need to
-
-1. Chain on the `enableSandboxMode(true)` to the `new SendGridMessage('template_id')`
+To enable sandbox mode you will need to chain on the `enableSandboxMode()` to the message object.
 
 Example:
 
 ```php
-<?php
-
-namespace App\Notifications;
-
-use Illuminate\Notifications\Notification;
-use NotificationChannels\SendGrid\SendGridChannel;
-
-class ExampleNotification extends Notification
-{
-    public function via($notifiable)
-    {
-        return [
-            SendGridChannel::class,
-            // And any other channels you want can go here...
-        ];
-    }
-
-    // ...
-
-    public function toSendGrid($notifiable)
-    {
-        return (new SendGridMessage('Your SendGrid template ID'))
-            /**
-             * optionally set the from address.
-             * by default this comes from config/mail.from
-             * ->from('no-reply@test.com', 'App name')
-             */
-            /**
-             * optionally set the recipient.
-             * by default it's $notifiable->email:
-             * ->to('hello@example.com', 'Mr. Smith')
-             */
-            
-            ->enableSandboxMode(true)
-            ->payload([
-                "template_var_1" => "template_value_1"
-            ]);
-	}
-}
-
+return (new SendGridMessage('Your SendGrid template ID'))
+    ->enableSandboxMode()
+    ->payload([
+        "template_var_1" => "template_value_1"
+    ]);
 ```
 
+When making a request with sandbox mode enabled, Sendgrid will validate the form, type, and shape of your request. No email will be sent. You can read more about the sandbox mode [here](https://docs.sendgrid.com/for-developers/sending-email/sandbox-mode).
+
 ## Changelog
 
 Please see [CHANGELOG](CHANGELOG.md) for more information what has changed recently.
diff --git a/src/SendGridMessage.php b/src/SendGridMessage.php
index 6ee2e45..188e013 100644
--- a/src/SendGridMessage.php
+++ b/src/SendGridMessage.php
@@ -47,7 +47,7 @@ class SendGridMessage
      *
      * @var bool
      */
-    public $sandbox_mode = false;
+    public $sandboxMode = false;
 
     /**
      * Create a new SendGrid channel instance.
@@ -117,7 +117,7 @@ public function build(): Mail
 
         $email->setTemplateId($this->templateId);
 
-        if($this->sandbox_mode){
+        if ($this->sandboxMode) {
             $email->enableSandBoxMode();
         }
 
@@ -129,14 +129,16 @@ public function build(): Mail
     }
 
     /**
-     * Set the "sandbox_mode".
+     * Enabling sandbox mode allows you to send a test email to
+     * ensure that your request body is formatted correctly
+     * without delivering the email to any of your recipients.
      *
-     * @param bool $enabled
+     * @see https://docs.sendgrid.com/for-developers/sending-email/sandbox-mode
      * @return $this
      */
-    public function enableSandboxMode($enabled)
+    public function enableSandboxMode()
     {
-        $this->sandbox_mode = $enabled;
+        $this->sandboxMode = true;
 
         return $this;
     }
diff --git a/tests/SendGridChannelTest.php b/tests/SendGridChannelTest.php
index e3dd906..2314652 100644
--- a/tests/SendGridChannelTest.php
+++ b/tests/SendGridChannelTest.php
@@ -56,7 +56,7 @@ public function toSendGrid($notifiable)
         $this->assertEquals($message->payload['baz'], 'foo2');
         $this->assertEquals($message->replyTo->getEmail(), 'replyto@example.com');
         $this->assertEquals($message->replyTo->getName(), 'Reply To');
-        $this->assertEquals($message->sandbox_mode, false);
+        $this->assertEquals($message->sandboxMode, false);
 
         // TODO: Verify that the Mail instance passed contains all the info from above
         $sendgrid->shouldReceive('send')->once()->andReturn($response);
@@ -77,7 +77,7 @@ public function toSendGrid($notifiable)
                         'bar' => 'foo',
                         'baz' => 'foo2',
                     ])
-                    ->enableSandboxMode(true);
+                    ->enableSandboxMode();
             }
         };
 
@@ -103,7 +103,7 @@ public function toSendGrid($notifiable)
         $this->assertEquals($message->payload['baz'], 'foo2');
         $this->assertEquals($message->replyTo->getEmail(), 'replyto@example.com');
         $this->assertEquals($message->replyTo->getName(), 'Reply To');
-        $this->assertEquals($message->sandbox_mode, true);
+        $this->assertEquals($message->sandboxMode, true);
 
         // TODO: Verify that the Mail instance passed contains all the info from above
         $sendgrid->shouldReceive('send')->once()->andReturn($response);