Open Source Alternatives to Gmail
An email communication service that provides web-based messaging, storage, and integration with Google Workspace tools for personal and business use, including custom business email addresses, phishing and spam protection, and an ad-free experience.
Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Gmail give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 4 open source alternatives to Gmail. The most popular are Tuta, Roundcube Webmail and Forward Email. Most use the GPL-3.0 or AGPL-3.0 license, and 3 offer an official Docker image.
Tuta
An encrypted email, calendar, and contacts service providing end to end encryption across multiple devices and platforms.
Roundcube Webmail
A browser based multilingual IMAP client providing full email functionality with an application like user interface.
Forward Email
Privacy focused email service providing encrypted forwarding and full mail server capabilities for custom domains.
Twake Mail
A multi-platform email client using the JMAP protocol for efficient synchronization across mobile and web interfaces.
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