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Mozilla does not provide telephone support and does not charge for software downloads, upgrades or technical help. Learn more.
Frequently asked questions about Firefox Accounts on Mozilla Support.
This article explains how Thunderbird stores messages on a disk drive and why it is necessary to periodically compact (purge).
Keyboard shortcuts are quick key combinations that replace mouse navigation. This is a list of commonly used keyboard shortcuts in Thunderbird.
Thunderbird saves personal information such as messages, passwords and user preferences in a set of files called a "profile".
How to move Thunderbird data (accounts, messages, passwords) to a new computer.
Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 91.0.
This article will show you how to manually configure the basic settings you need to send and receive emails with Thunderbird.
This article describes how to use Google calendars together with Lightning.
This page explains the privacy implications of allowing remote content like images to be displayed in email messages.
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.
What message filters are, how to create and use them effectively.
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.
The Thunderbird Password Manager securely stores your username and passwords. Learn how to save, view, delete and edit your passwords.
Thunderbird stores your personal information and settings in a profile folder. Learn to work with different profiles on Thunderbird.
This article explains what end-to-end encryption is and how to use it to protect the contents of your email in Thunderbird.
This article answers common questions about OpenPGP support in Thunderbird, as implemented in End-To-End Encryption (e2ee), and how it differs from Enigmail.
Firefox and Thunderbird install Mozilla Maintenance Service to allow seamless background updates. Learn how it works and how to disable or remove it.
This article explains how to create and use custom signatures (text or images that are automatically appended to messages).
The Quick Filter toolbar is used to limit the number of messages that are displayed in the message list. Learn more about how to use it.