Free & Open-Source Postbox Alternatives

Email manager based on Thunderbird.

1. Thunderbird ↗ FOSSPRIVATE
   Mozilla's privacy-focused email client.
   ●○○Easy · Reads common file formats
2. Betterbird ↗ FOSSPRIVATE
   Thunderbird fork with extra usability features.
   ●○○Easy · Reads common file formats
3. Mailspring ↗
   Modern email client with snooze and templates.
   ●○○Easy · Reads common file formats