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This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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New in Thunderbird 102

Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 102.0.

Last updated: 9/15/22

Thunderbird makes unrequested connections

Thunderbird sometimes automatically connects to the Internet. These connections are for routine maintenance, update and security purposes.

Last updated: 4/16/16

Thunderbird and Logjam

Thunderbird no longer supports 512 bit (so called US export) keys for TLS connections.

Last updated: 8/26/15

Thunderbird end of Support for XP and Vista

Support for Windows XP and Vista has ended.

Last updated: 1/2/19

Primary Password is replacing Master Password in Thunderbird

Primary Password is replacing Master Password. Learn more about why we are making this change.

Last updated: 5/17/22

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