Supported API headers

Infobip Email API supports standard and custom headers to improve delivery and compliance.

Header	Description
`List-Unsubscribe`	Required for compliance. Adds unsubscribe link or email address.
`Reply-To`	Defines reply-to address.
`Return-Path`	Handles bounces and delivery failures.
`Message-ID`	Custom unique ID for tracking.
`X-Custom-*`	Add your own custom headers for integration needs.

Was this page helpful?