Open source webmail client for IMAP with address book, search, folders, and a customizable UI via plugins and skins.
7.1k stars1.8k forksGPL-3.0last commit Actively maintained
4 self-hosted Mailbird alternatives
Mailbird is a desktop email client for Windows and Mac that consolidates multiple IMAP/POP3 and Exchange accounts into a unified inbox. It provides advanced search, snooze, signatures, customizable workspaces and integrations with third-party productivity apps.
Alternatives to Mailbird
SnappyMail is a fast, modern webmail client (RainLoop fork) focused on performance, privacy, and secure IMAP access with optional PGP support and admin controls.
1.7k stars215 forksAGPL-3.0last commit Actively maintained
Nextcloud Mail is a webmail app that connects to IMAP/SMTP accounts, offering a unified inbox and deep integration with other Nextcloud apps like Contacts and Calendar.
1k stars340 forksAGPL-3.0last commit Actively maintained
#4
Open-source webmail and groupware offering email, contacts, calendar, cloud drive, tasks, notes and an admin control panel for multi-tenant email services.
Activity unknown
What replacing Mailbird actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 3 of 4 shipped a commit in the last six months. Licences in this list: GPL-3.0, AGPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Webmail Clients.
