A free email application from Mozilla that`s easy to set up and customize

Thunderbird for Mac

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Download Thunderbird 91.3.0

  -  118 MB  -  Open Source

What's new in this version:

Fixed:
- Default mail headers were set incorrectly when the value contained a colon (:)
- Thunderbird did not send the QUIT command when closing an SMTP connection
- Mail tabs could not be closed using the context menu
- "Print" context menu was still shown when no message pane was displayed
- Windows tray icon did not reappear after restarting Windows Explorer
- Compose window attachment drag and drop fixes
- Various macOS stability improvements
- Drag and Drop area for file attachments on Windows was incorrect
- CardDAV address books without a name did not work
- Thunderbird tried to refresh disabled and manual-only calendars when the network state changed from offline to online
- Various Calendar event dialog fixes
- Various security fixes

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