Self-hosted alternatives to Gmail

docker-mailserver

★ 18,419

Production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database.

Postal

★ 16,616

Complete and fully featured mail server for use by websites & web servers.

Mail-in-a-Box

★ 15,343

Turns any Ubuntu server into a fully functional mail server with one command.

Stalwart Mail Server

★ 13,282

All-in-one mail server with JMAP, IMAP4, and SMTP support and a wide range of modern features.

Mailcow

★ 12,987

Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration.

Mailu

★ 7,327

Simple yet full-featured mail server as a set of Docker images.

SimpleLogin

★ 6,743

Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps.

Maddy Mail Server

★ 6,015

All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon.

Mox

★ 5,726

Complete e-mail solution with IMAP4, SMTP, SPF, DKIM, DMARC, MTA-STS, DANE and DNSSEC, reputation-based and content-based junk filtering, Internationalization (IDNA), automatic TLS with ACME and Let's Encrypt, account autoconfiguration, and webmail.

AnonAddy

★ 4,704

Email forwarding service for creating aliases.

Modoboa

★ 3,509

Mail hosting and management platform including a modern and simplified web user interface.

wildduck

★ 2,101

Scalable no-SPOF IMAP/POP3 mail server.