Welcome to Mozilla Messaging's Knowledge Base! This site has a variety of articles that help you install, configure and use Thunderbird.

If you can't find an answer to your problem here, visit Mozilla Messaging's community support site. You can search the support site for questions and answers posted by other Thunderbird users. If you still can't find an answer, you can post a question of your own. Please do not post questions in the article comments on this site - your questions probably won't be answered.

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Articles

• Thunderbird FAQ
• FAQ Thunderbird and Windows 7

Installation

• Updating Thunderbird
• Software Update Failed
• Thunderbird Enterprise Deployment

Thunderbird 3

• Thunderbird 3 for users
• New in Thunderbird 3
• New in Thunderbird 3.1
• Migration Assistant
• FAQ Upgrading Thunderbird 2 to 3

General

• Menu Reference
• Sending and Receiving Emails
• Global Search
• Message Tabs
• Archived messages
• Keyboard shortcuts
• Signatures
• Profiles
• Using Multiple Profiles
• Standalone address book
• Customizing the Start Page

Accounts

• Automatic Account Configuration
• Configure an Account
• ISP Database
• Creating a Newsgroup Account
• ISP Configuration Settings (Hotmail, Gmail, Comcast, etc)
• IMAP Synchronization
• Using Identities

Troubleshooting

• Cannot Send Messages
• Software Update Failed
• Problems Sending and Receiving Messages
• Safe Mode
• Thunderbird is stuck in Safe Mode
• FAQ AOL email Sent Folder
• FAQ Changing IMAP to POP
• Build number not displayed
• Mozilla Crash Reporter
• Small Resolution Screens
• The Whats New or Migration Assistant tabs keep appearing