Seconding the Mailspring recommendation, but be aware that it requires a Mailspring ID. There’s some progress, though, with a telemetry-free fork[1] (that’s the

Seconding the Mailspring recommendation, but be aware that it requires a Mailspring ID. There’s some progress, though, with a telemetry-free fork[1] (that’s the version I’m using right now) and plans to make the ID optional in the official client [2]. [1]: https://github.com/notpushkin/Mailspring-Libre https://github.com/notpushkin/Mailspring-Libre [2]: https://community.getmailspring.com/t/mailspring-without-mailspring-id/64/2 https://community.getmailspring.com/t/mailspring-without-mai...