In https://feedback.helloid.com/general/p/allow-custom-return-path-for-dmarc-alignment a request has been made to enable DMARC alignment through a custom return path.

The request has been closed with a "provider does not support multiple domains".

However, DMARC alignment is becoming more and more a must have.

Especially when things go awry when there are DNS failures.

Legitimate emails would be rejected.

If the current provider (mailjet) does not support multiple domains for return-paths, why not look for a provider that does?