The Courier Developer Hub

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Profile Requirements

To deliver a message to a recipient over Postmark, Courier must be provided the recipient's email address. This value should be included in the recipient profile as email.

// Recipient Profile
  "email": "[email protected]"


You can use a provider override to replace what we send to Postmark's Email API. For example, you can add an attachment to your request:

  "recipient": "abc123",
  "profile": {
    "email": "[email protected]",
  "override": {
    "postmark": {
      "body": {
        "Attachments": [
            "Name": "readme.txt",
            "Content": "dGVzdCBjb250ZW50",
            "ContentType": "text/plain"

Everything inside of override.postmark will replace what we send to Postmark's Email API. You can see all the available options by visiting the Postmark API docs.

Updated about a year ago


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