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.

What's new in Thunderbird 78.10.2:

  • Added support for importing OpenPGP keys without a primary secret key
  • Add-ons manager displays a preferences icon for mail extensions that include an options page


  • OpenPGP messages with a high compression ratio (over 10x) could not be decrypted
  • Selected OpenPGP key was lost after opening the Key Properties dialog in Account Settings
  • Parsing some OpenPGP user IDs failed
  • Various improvements to OpenPGP partial encryption reminders
  • Troubleshooting information page did not display row labels on macOS
  • Mail toolbar buttons were too big when displaying both icons and text
  • Various security fixes

Download: Thunderbird 78.10.2 for Windows (EN/US) | 64-bit | ~50.0 MB (Open Source)
Download: Thunderbird 78.10.2 for Linux (EN/US) | 65.2 MB
Download: Thunderbird 78.10.2 for Mac OS (EN/US) | 66.5 MB
Download: Thunderbird 78.10.2 in other languages
View: Thunderbird Website | Release Notes | Screenshot