Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

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Thunderbird add-ons - frequently asked questions

Thunderbird add-ons - frequently asked questions

Add-ons are extensions and other additions that add new functionality to Thunderbird or change its appearance.

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.

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.