Mailcow replaces 4 paid apps

One open-source tool, 4 subscriptions it can stand in for. Each pairing below is curated and verified by hand, with the honest catch spelled out. No votes, no pay-to-list.

Mailcow $0→replaces $26/mo★ 13k · active sep 2026docker to self-host📬 email

mailcow.email ↗repo ↗Mailcow in the catalog →

the facts, verified

licenseGPL-3.0

runsyour server

setupnot verified by us yet — check the repo README

facts verified 2026-09-13

what it lets you cancel

HEYYES$8.25/mo

Dockerized full mail server suite — SMTP, IMAP, webmail, antispam, DKIM — with a slick admin UI.

the verdict →all HEY alternatives →

Google Workspace Business StarterYES$7/mo

Dockerized full mail server suite — SMTP, IMAP, webmail, antispam, DKIM — with a slick admin UI.

the verdict →all Google Workspace Business Starter alternatives →

FastmailYES$6/mo

Dockerized full mail server suite — SMTP, IMAP, webmail, antispam, DKIM — with a slick admin UI.

the verdict →all Fastmail alternatives →

Proton Mail PlusYES$4.99/mo

Dockerized full mail server suite — SMTP, IMAP, webmail, antispam, DKIM — with a slick admin UI.

the verdict →all Proton Mail Plus alternatives →

last updated 2026-09-13 · up to $312/yr replaced · no votes, no pay-to-list

Every verdict page above lists what you lose when you switch, so you can decide with open eyes.all open-source alternatives →