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Explore the knowledge base.
- Appearance Panel - Layout, Message List, Card View, Table View, Sorting and Threading settings
- Thunderbird and Exchange
- Move Thunderbird data to a new computer
- What is the Mozilla Maintenance Service?
- Profiles - Where Thunderbird stores your messages and other user data
- Remote Content in Messages
- Protect your Thunderbird passwords with a Primary Password
- Master password requested but not set Redirect 1
- Protect your Thunderbird passwords with a Primary Password
- Primary Password is replacing Master Password in Thunderbird
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Thunderbird add-ons - frequently asked questions
Add-ons are extensions and other additions that add new functionality to Thunderbird or change its appearance.
Compacting folders
This article explains how Thunderbird stores messages on a disk drive and why it is necessary to periodically compact (purge).
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.
Filelink for Large Attachments
Messages with large attachments are often rejected by mail servers. Thunderbird can use web-based storage services to send large file attachments.
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