foropensource

KaiMail email forwarding for custom domains

Free program for open source projects and volunteer communities to use their own domain for email: custom-domain addresses (e.g. contact@, sponsors@, security@) with forwarding, DKIM/ARC signing, no mail server, no per-seat fees.

Eligibility: for the project; Open source projects and volunteer communities; detailed criteria not published, set up per request.

How to apply: Contact KaiMail and tell them about your project or community ("tell us about it and we will get you set up").

last verified 2026-07-06