There are cases when you wish to set some custom variables to be returned as headers per message.
Request fields
customheaders An array of custom headers to be included in call-backs and tracking. Email Plus accepts up to 10 custom headers in object format {"name":"xxx", "value":"yyy"}.
| Path | Type | Description |
|---|---|---|
| name | String | The name of the custom header. If provided it must not be null. The Size must be between 1 and 60 inclusive. |
| value | String | The value of the custom header. If provided must not be blank |