Thunderbird 52.9.1


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 52.9.1 changelog:

  • Thunderbird will now prompt to compact IMAP folders even if the account is online


  • Complete fix of the EFAIL vulnerability: 1) Removing some HTML crafted to carry out an attack. 2) Optionally: Not decrypting subordinate message parts that otherwise might reveal decrypted content to the attacker. Preference mailnews.p7m_subparts_external needs to be set to true for added security.
  • Various problems when forwarding messages inline when using "simple" HTML view
  • Deleting or detaching attachments corrupted messages under certain circumstances (not working only in Thunderbird version 52.9.0)
  • Various security fixes

Download: Thunderbird 52.9.1 for Windows (EN/US) | 38.7 MB (Freeware)
Download: Thunderbird 52.9.1 for Linux (EN/US) | 48.8 MB
Download: Thunderbird 52.9.1 for Mac OS (EN/US) | 75.8 MB
Download: Thunderbird 52.9.1 in other languages
View: Thunderbird Website | Release Notes

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