Mozilla Thunderbird Beta

By Mozilla Free

Key Details of Mozilla Thunderbird Beta

  • Experience Thunderbird's latest innovations and contribute with constructive evaluation input and performance feedback
  • Last updated on 10/19/20
  • There have been 12 updates within the past 6 months
  • The current version has 0 flags on VirusTotal badge_icon
  • Also available on Mac
Beta or prerelease software is not intended for inexperienced users, as the software may contain bugs or may potentially damage your system. We strongly recommend that users exercise caution and save all mission-critical data before installing or using this software.

Developer's Description

Mozilla Thunderbird Beta is intended for developers and members of our testing community to use for evaluation and feedback. The beta version features Windows 7 Jump lists, fixes when importing email from Microsoft Outlook, and default mail client check now works with newer Linux distributions.

Full Specifications

What's new in version 82.0b3

  • MailExtensions: API for running content scripts on displayed messages
  • MailExtensions: browser.tabs.sendMessage API added
  • Chat icons updated
  • MailExtensions: compose.begin functions now support creating a message with attachments
  • Various fixes


Release October 19, 2020
Date Added October 19, 2020
Version 82.0b3

Operating Systems

Operating Systems Windows 10, Windows 8, Windows 8.1, Windows, Windows 7
Additional Requirements None


Total Downloads 6,963
Downloads Last Week 2
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