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The difference between IMAP and POP3

Thunderbird gives users the choice between using IMAP or POP3. This documentation will explain the major differences between these protocols.

Thunderbird and Gmail

Thunderbird can be set up to work seamlessly with Google's Gmail. Messages will be synchronized between your local version of Thunderbird and web-based Gmail.

Cannot send messages

If you cannot send messages with Thunderbird, this page provides a series of steps you can follow to check for common problems.

Protect your Thunderbird passwords with a Primary Password

Make Thunderbird require you to enter a primary password in order to view or use passwords you've told Thunderbird to remember.

Maildir in Thunderbird

Optional support for Maildir allows you to store email as individual files, unlike the default single file format. Learn about Maildir in Thunderbird.

How to change the Thunderbird layout

Thunderbird contains three layout options for you to choose from to best fit your preference.

Ignoring threads

The Ignore Thread (or Subthread) feature is very useful for mailing lists. It lets you skip reading the rest of a conversation you're not really interested in.

Dangerous directories

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

Installing an Add-on in Thunderbird

Add-ons add functionality to Thunderbird or change its appearance. Learn how to install add-ons to Thunderbird.

Make Thunderbird the Default Mail Client

If Thunderbird is specified as your system's default email application, it will integrate with other applications (such as word processors and web browsers).