Doing so disables features that require paid APIs and cloud data storage (send later, read receipts, etc.), but you can opt in and create an account at any time from Preferences > Subscription.

Mailspring now defaults to SSL / TLS on port 465 for SMTP, per RFC 8314 (Thanks to now go back to inbox after 'Remove and show next/previous' for last email (Thanks to no longer requires a Mailspring ID! You can opt-out in the app's setup flow and connect your email accounts without first creating a Mailspring ID. (Thanks to now skips 'All Mail' when syncing Protonmail accounts which prevents messages from thrashing between folders and consuming significant CPU. The Mailspring snapcraft distribution now loads using LZO, which significantly improves launch performance. We have temporarily removed the ability to reply directly from notification toasts on MacOS, pending futher support for it in Electron. Mailspring now uses the system spellchecker more directly - on MacOS, the spellcheck language is auto-determined as you type.

This will allow Mailspring to ship Universal builds for MacOS ARM machines! This release moves Mailspring from Electron 8 to Electron 14 thanks to the hard work of and other community members! 🎉 This brings Wayland support on Linux and many performance and security improvements.

Mailspring release schedule