Download Mozilla Thunderbird 52.9.0

The Mozilla Foundation has released version 52.9.0 of Thunderbird. Mozilla Thunderbird is an open source email and newsgroup client, with features such as support for several mail and news accounts, a spam filter, spell checker, and a customizable look and feel. In Thunderbird, new functionality is rarely added. New in version 52 is, among other things, that images are now added as data URIs in messages. In addition, there is now a drop-down menu that allows you to quickly customize the way folders are displayed. In addition, in Lightning it is now possible to edit events in tabs. This update includes several security issues remedied.

Changed

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

Fixed

• 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 decryted 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
• Various security fixes

The following downloads are available:
Mozilla Thunderbird 52.9.0 for Windows (English)
Mozilla Thunderbird 52.9.0 for Linux (English)
Mozilla Thunderbird 52.9.0 for macOS (English)
Mozilla Thunderbird 52.9.0 for Windows (English)
Mozilla Thunderbird 52.9.0 for Linux (English)
Mozilla Thunderbird 52.9.0 for macOS (English)
Mozilla Thunderbird 52.9.0 for Windows (Frisian)
Mozilla Thunderbird 52.9.0 for Linux (Frisian)
Mozilla Thunderbird 52.9.0 for macOS (Frisian)