Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

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OAuth2 Authentication for Yahoo, AOL and ATT

OAuth2 Authentication for Yahoo, AOL and ATT

How to set up Yahoo! services (including AOL, ATT and other services that use Yahoo servers) in Thunderbird.

Profiles - Where Thunderbird stores your messages and other user data

Profiles - Where Thunderbird stores your messages and other user data

Thunderbird saves personal information such as messages, passwords and user preferences in a set of files called a "profile".

Avoid and report Mozilla tech support scams

Avoid and report Mozilla tech support scams

Mozilla does not provide telephone support and does not charge for software downloads, upgrades or technical help. Learn more.

Remote Content in Messages

Remote Content in Messages

This page explains the privacy implications of allowing remote content like images to be displayed in email messages.