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Firefox accounts on support.mozilla.org
Frequently asked questions about Firefox Accounts on Mozilla Support.
Avoid and report Mozilla tech support scams
Mozilla does not provide telephone support and does not charge for software downloads, upgrades or technical help. Learn more.
Blocking a sender
This article explains how to block a particular sender in Thunderbird.
Keyboard shortcuts - perform common Thunderbird tasks quickly
Keyboard shortcuts are quick key combinations that replace mouse navigation. This is a list of commonly used keyboard shortcuts in Thunderbird.
Moving Thunderbird Data to a New Computer
How to move Thunderbird data (accounts, messages, passwords) to a new computer.
Manual Account Configuration
This article will show you how to manually configure the basic settings you need to send and receive emails with Thunderbird.
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.
Global Search
Thunderbird includes a message indexing system that improves search performance and displays faceted (categorized) search results.
Automatic Account Configuration
Setting up a new account with Thunderbird is easy. All you need to do is provide your user name and password for your email provider and your email address.
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.
Thunderbird and Hotmail
Thunderbird can be used as a client for all of Microsoft's email services. You can still use Hotmail's web-based application - Thunderbird will synchronize messages.
Updating Thunderbird
Thunderbird automatically updates itself by default but you can always do a manual update. Learn how to update Thunderbird.
Compacting folders
This article explains how Thunderbird stores messages on a disk drive and why it is necessary to periodically compact (purge).
Configuration Options for Accounts
Learn about the Account Settings window including server settings, identities, signatures, and more.
Thunderbird and Junk / Spam Messages
This article explains how Thunderbird's adaptive filter learns to identify junk mail ("spam").
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.
New Email Address
This article explains how you can subscribe to a personalized email address with Thunderbird.
Remote Content in Messages
This page explains the privacy implications of allowing remote content like images to be displayed in email messages.
How to create and use mailing lists on Thunderbird
A mailing list is used to send one email to a group of contacts. This article explains how to create and use mailing lists in Thunderbird.
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.