Free & Open-Source Hey.com Alternatives

Opinionated email service by Basecamp.

1. Thunderbird + IMAP ↗ ★ PICKFOSSPRIVATE
   Self-host email + use Thunderbird as client.
   ●●○Medium · End-to-end encrypted
2. Tutanota ↗ FOSSPRIVATE
   Encrypted email + calendar from Germany.
   ●○○Easy · End-to-end encrypted