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- Appearance Panel - Layout, Message List, Card View, Table View, Sorting and Threading settings
- Thunderbird and Exchange
- Channel Choices for Thunderbird Snap and Flatpak
- Profiles - Where Thunderbird stores your messages and other user data
- What is the Mozilla Maintenance Service?
- 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
- OAuth2 for Thunderbird
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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".
Channel Choices for Thunderbird Snap and Flatpak
This article discusses choosing a channel to install Thunderbird on Linux using Snap and Flatpak
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.
Thunderbird and Junk / Spam Messages
This article explains how Thunderbird's adaptive filter learns to identify junk mail ("spam").
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