Webmail Clients

5 self-hosted open source alternatives in this category

Mail-in-a-Box

A mail server in a box with a modern admin panel.

Turn a fresh Ubuntu server into a complete mail server with webmail, DNS, spam filtering, automatic TLS, and an easy-to-use admin control panel.

Alternative to:

Google Workspace+7

Mailu

Docker-based mail server stack with a modern admin UI

957

Last commit: 24d ago

Mailu is an all-in-one email server stack (SMTP/IMAP/webmail) packaged for Docker, with anti-spam/AV, DKIM/DMARC support, and a web admin interface for domains and mailboxes.

Alternative to:

Gmail+6

Roundcube

Browser-based IMAP webmail with a plugin-driven UI

6.7k

1.7k

Last commit: 5d ago

Self-hosted webmail client for IMAP accounts with address book, message search, identities, and an extensible plugin/skin system.

Alternative to:

Gmail+4

SnappyMail

Modern, lightweight webmail client for IMAP and SMTP

1.5k

174

Last commit: 6mo ago

Fast, privacy-friendly webmail client with IMAP/SMTP, Sieve filters, PGP support, and a responsive UI. A community-driven continuation of RainLoop.

Alternative to:

Gmail+4

Cypht

A lightweight webmail client for IMAP accounts

1.4k

200

Last commit: 17d ago

Cypht is a lightweight, extensible webmail client that aggregates IMAP mailboxes and provides a fast, minimal UI with optional modules such as SMTP sending and Sieve filtering.

Alternative to:

Gmail+2