Thunderbird 91.7.0 [Update]


Thunderbird is a free, open-source, cross-platform application for managing email and news feeds. It is a local (rather than a web-based) email application that is powerful yet easy-to-use. Thunderbird is developed, tested, translated and supported by the folks at Mozilla Corporation and by a group of dedicated volunteers. Thunderbird gives you control and ownership over your email. There are lots of add-ons available for Thunderbird that enable you to extend and customize your email experience.

Thunderbird gives you IMAP/POP support, a built-in RSS reader, support for HTML mail, powerful quick search, saved search folders, advanced message filtering, message grouping, labels, return receipts, smart address book LDAP address completion, import tools, and the ability to manage multiple e-mail and newsgroup accounts.

Thunderbird 91.6.2 fixes:

  • Temporary files from opened attachments were saved with world-readable permission
  • Various security fixes

Changes in Thunderbird 91.7.0:

  • Thunderbird will use the first occurrence of headers that should only appear once


  • Auto-complete incorrectly changed a pasted email address to the primary address of a contact
  • Attachments with filename extensions that were not registered in MIME types could not be opened
  • Copy/Cut/Paste actions not working in Thunderbird Preferences
  • Improved screen reader support of displayed message headers
  • Various security fixes

Download: Thunderbird 91.7.0 for Windows (EN/US) | 32-bit | ~50.0 MB (Open Source)
Download: Thunderbird 91.7.0 for Linux (EN/US) | 71.9 MB
Download: Thunderbird 91.7.0 for Mac OS (EN/US) | 119.0 MB
Download: Thunderbird 91.7.0 in other languages
View: Thunderbird Website | Release Notes | Screenshot

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