Idempotency for Bulk Messaging
To prevent duplicate sends during network retries or client-side timeouts, we introduced an optional idempotency header on the Bulk endpoint.
- New: Support for the
Idempotency-Keyheader onPOST /v1/messages/bulk. - Documentation: The Templates, Sender IDs and Optouts sections are now publicly documented.
- Documentation: Additional error codes added to the help section.