Customize controls, options and add-ons

Thunderbird options, preferences and settings

Compacting folders

This article explains how Thunderbird stores messages on a disk drive and why it is necessary to periodically compact (purge).

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.

Using Multiple Profiles

Thunderbird saves personal information such as messages, passwords and user preferences in a "profile". This article describes how to use multiple profiles.

FAQ Changing IMAP to POP

If your mail server supports both IMAP and POP, Thunderbird will use IMAP by default. Use these instructions to manually configure a POP account.

Dangerous directories

Some system folders are not allowed when setting Thunderbird storage location as they cause issues.

Config Editor

Using the config editor to view or edit Thunderbird preference settings.

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