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.
Automatic Account Configuration
Setting up a new account with Thunderbird is fast! Setup is quick for most e-mail providers with only your username and password required.
Manual Account Configuration
This article will show you how to manually configure the basic settings you need to send and receive emails with Thunderbird.
Switch from POP to IMAP account
This article explains how to switch from a POP to an IMAP account in Thunderbird.
Changing IMAP to POP
As of Thunderbird 3, the new Automatic Account Configuration Wizard can help you configure your connection to your email provider, but only if your provider is in Mozilla's database of Internet Service Providers or recognized by Thunderbird. While most of the large providers are included, many smaller ones are not yet in the account configuration database.
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.
Glossary of Terms including types of Accounts
This article describes the types of accounts (IMAP, POP, RSS, NNTP) supported by Thunderbird.