Find Open-Source Alternatives
Discover powerful open-source replacements for popular commercial software. Save on costs, gain transparency, and join a community of developers.
Discover powerful open-source replacements for popular commercial software. Save on costs, gain transparency, and join a community of developers.
Compare community-driven replacements for Gmail in mail servers & relays workflows. We curate active, self-hostable options with transparent licensing so you can evaluate the right fit quickly.
Run on infrastructure you control
Recent commits in the last 6 months
MIT, Apache, and similar licenses
Counts reflect projects currently indexed as alternatives to Gmail.
These projects match the most common migration paths for teams replacing Gmail.
Why teams pick it
Self-hosted AI-enhanced email client with unified inbox
Why teams pick it
Self-hosted architecture with customizable templates and list management
Self-hosted AI-enhanced email client with unified inbox
Why teams choose it
Watch for
Requires technical knowledge to set up and maintain
Migration highlight
Consolidate corporate mailboxes
All employee Gmail and Outlook accounts appear in a single searchable inbox, reducing context switching.
Self-hosted email marketing and mail server platform
One-click, self-hosted email server that just works
Fully featured Docker‑based mail server that's simple to deploy
Composable all-in-one mail server replacing multiple daemons
Secure email with seamless end-to-end encryption across devices
Teams replacing Gmail in mail servers & relays workflows typically weigh self-hosting needs, integration coverage, and licensing obligations.
Tip: shortlist one hosted and one self-hosted option so stakeholders can compare trade-offs before migrating away from Gmail.
Why teams choose it
Watch for
Requires server infrastructure and technical expertise to maintain
Migration highlight
SaaS Transactional Email
Application sends password resets, notifications, and receipts through owned infrastructure without per-email fees
Why teams choose it
Watch for
Limited customization – no power‑user options
Migration highlight
Personal email domain
Run your own address (you@yourdomain.com) with spam filtering and encrypted connections, eliminating reliance on third‑party providers.
Why teams choose it
Watch for
Requires familiarity with Docker and container orchestration
Migration highlight
Deploy a company mail system in minutes
Launch IMAP/SMTP services with webmail and admin UI using a single docker‑compose file.
Why teams choose it
Watch for
IMAP storage is still in beta
Migration highlight
Unified mail server for a startup
Simplified setup and reduced operational cost
Why teams choose it
Watch for
Requires internet connectivity for synchronization
Migration highlight
Secure personal correspondence
All personal emails are encrypted end‑to‑end, protecting them from interception.