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- 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
- Thunderbird and Junk / Spam Messages
- Thunderbird add-ons - frequently asked questions
- Compacting folders
- Protect your Thunderbird passwords with a Primary Password
- Master password requested but not set Redirect 1
- Certificates
- Protect your Thunderbird passwords with a Primary Password
- Primary Password is replacing Master Password in Thunderbird
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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.
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".
Thunderbird add-ons - frequently asked questions
Add-ons are extensions and other additions that add new functionality to Thunderbird or change its appearance.
Thunderbird and Junk / Spam Messages
This article explains how Thunderbird's adaptive filter learns to identify junk mail ("spam").
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