Thunderbird: Free Your Inbox

Thunderbird is a powerful, privacy-focused email app. Manage multiple accounts with a Unified Inbox for better productivity. Built on open-source tech, it never sells your data. No ads, just user-funded support. Sync emails instantly or on-demand, use OpenPGP encryption, and search messages locally or server-side. Works with Gmail, Outlook, Yahoo, and more. Trusted for 20+ years, now on Android.