compare

Maddy vs mailcow

The same facts for both, read from GitHub every night, and the relation a person reviewed.

Maddy vs mailcow
Fact	Maddy	mailcow
Language	Go	JavaScript
Licence	GPL-3.0	GPL-3.0
Stars	6.1k	14k
Latest	v0.9.6	2026-09a
Last push	2026-10-03	2026-10-06
Release cadence	about 21 days between releases	about 18 days between releases
Active contributors	2 commit authors on the default branch in the last 90 days	11 commit authors on the default branch in the last 90 days
Flags	none	none

How they relate

Both replace Google Workspace. Alternatives to Google Workspace →
PartialMaddySMTP, IMAP, DKIM, SPF and DMARC in one Go binary; mail only.
PartialmailcowMail, calendars and contacts with SOGo webmail; no office suite.