[Mailer] Document the usage of custom headers in Infobip bridge

javiereguiluz · javiereguiluz · commit ce138a9f152b · 2024-06-21T09:25:59.000+02:00
diff --git a/src/Symfony/Component/Mailer/Bridge/Infobip/README.md b/src/Symfony/Component/Mailer/Bridge/Infobip/README.md
@@ -12,6 +12,19 @@ MAILER_DSN=infobip+api://KEY@BASE_URL
 MAILER_DSN=infobip+smtp://KEY@default
 ```
 
+Custom Headers
+--------------
+
+This transport supports the following custom headers:
+
+| Header                           | Type    | Description                                                                                  |
+| -------------------------------- | ------- | -------------------------------------------------------------------------------------------- |
+| `X-Infobip-IntermediateReport`   | boolean | The real-time Intermediate delivery report that will be sent on your callback server.        |
+| `X-Infobip-NotifyUrl`            | string  | The URL on your callback server on which the Delivery report will be sent.                   |
+| `X-Infobip-NotifyContentType`    | string  | Preferred Delivery report content type. Can be application/json or application/xml.          |
+| `X-Infobip-MessageId`            | string  | The ID that uniquely identifies the message sent to a recipient.                             |
+| `X-Infobip-Track`                | boolean | Enable or disable open and click tracking.                                                   |
+
 Resources
 ---------
 * [Infobip Api Docs](https://www.infobip.com/docs/api#channels/email)
