BuySoftwaresOnlineThunderbird
Open-source email, calendar and chat
Office & ProductivityMPL-2.0Windows · macOS · Linux · Android · iOSPopular
About Thunderbird
Thunderbird is the free, privacy-respecting email client from Mozilla, with unified folders, calendar and tasks, OpenPGP encryption, and add-ons for nearly anything. It supports all major email providers out of the box.
Thunderbird is completely free and open source (MPL-2.0) — no trials, no subscriptions, no locked features. Always download from the official website to avoid bundled malware.
Free alternative to: Microsoft Outlook
Pro options: Optional Thunderbird Pro services — email hosting, appointment booking and cloud storage — are rolling out as paid add-ons; the desktop app stays free.
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