Side-by-side comparison based on expert reviews and community consensus.
FairEmail
Best for AndroidMozilla Thunderbird
Best OverallPrice
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Summary
The privacy-first Android email client that handles Google's tricky OAuth authentication without complaint. Open-source, lightweight, and trusted by the privacy community.
The gold standard free email client with decades of reliability. Supports any email provider, runs on all major platforms, and has a massive plugin ecosystem for customization.
Pros
- Properly handles Google's nonstandard OAuth token authentication
- Strong privacy focus — open-source and no data collection
- Supports IMAP for any email provider
- Lightweight with no unnecessary background processes
- Completely free and open-source with no paywalled features
- Supports multiple email accounts including Gmail, custom domains, and IMAP
- Extensive plugin library for added functionality
- Strong privacy features and no data harvesting
Cons
- UI is functional but not visually polished
- Learning curve for initial setup and configuration
- Some advanced features require a one-time paid unlock
- UI feels dated compared to modern email apps
- Mobile version is not available — desktop only
- Setup can be complex for non-technical users
Our take
For Android users who care about privacy and don't want a bloated app phoning home, FairEmail is the clear winner. It's not flashy, but it's honest software that just works.
If you want one email client that does everything without costing a dime, Thunderbird is it. The open-source community has kept it sharp, and nothing else at this price point comes close.
Buy
