GoKawiilPenguin Mail launches as open-source Rust email client for Linux
Penguin Mail is a new open-source email client built in Rust for Linux, supporting Gmail, Outlook, iCloud, Fastmail and generic IMAP/POP3/SMTP accounts with automatic server detection. It unifies multiple accounts into one synced inbox with tray notifications, and bundles calendar, contacts, OpenPGP/S-MIME encryption via GnuPG, and support for provider-side filtering rules like Gmail filters and Sieve.