Thunderbird and Junk / Spam Messages
This article explains how Thunderbird's adaptive filter learns to identify junk mail ("spam").
Export your Thunderbird Profile
Thunderbird's export tool lets you create a backup of your Thunderbird profile including accounts, messages, address books, and settings.
Message threading in Thunderbird - keep messages grouped by conversation
Threading is a useful way of displaying message list in Thunderbird with your messages grouped in tree structures by conversations. Here's how to enable it.
Notifications in Thunderbird
This allows Mozilla to push important, time-sensitive notifications to users. These notifications are scheduled based on version, OS and locale.
Import settings and data into Thunderbird for Android
How to import email settings from K-9 and Thunderbird for Android
Compacting folders
This article explains how Thunderbird stores messages on a disk drive and why it is necessary to periodically compact (purge).
Archived Messages
This article explains how the "archive" feature of Thunderbird works.
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.
Import settings and data into Thunderbird
With Thunderbird's import tool, you can import settings and data from a variety of sources including Thunderbird profiles, other applications or files.
Signatures
This article explains how to create and use custom signatures (text or images that are automatically appended to messages).
Display the Thunderbird menus and toolbar
The menu items File, Edit, View, etc. are located in the menu bar. This article will help you restore a missing menu bar.
Use multiple profiles in Thunderbird
Thunderbird saves personal information such as messages, passwords and user preferences in a "profile". This article describes how to use multiple profiles.
Customize Date and Time formats in Thunderbird
How to customize date and time formats in Mozilla Thunderbird using regional settings or override preferences.
Thunderbird add-ons - frequently asked questions
Add-ons are extensions and other additions that add new functionality to Thunderbird or change its appearance.
How to Subscribe to News Feeds and Blogs
An introduction to RSS feeds, and instructions on how to use them in Thunderbird.
Configuration Options for Accounts
Learn about the Account Settings window including server settings, identities, signatures, and more.
Hyperlinks in Messages Not Working
When clicking hyperlinks in email, your default web browser should open and display their content. Learn why that may fail and why links may not be clickable.
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.
Installing an Add-on in Thunderbird
Add-ons add functionality to Thunderbird or change its appearance. Learn how to install add-ons to Thunderbird.
Config Editor
Using the config editor to view or edit Thunderbird preference settings.
Install themes to change the look of Thunderbird
A theme is a type of add-on which changes the visual appearance of Thunderbird. Learn how to find, install, and manage themes within Thunderbird.
Upgrading from an older version of Thunderbird
This article will help you upgrade old versions of Thunderbird to the latest version.
Message List Columns
This article explains how to configure the columns that Thunderbird displays in message lists.
How to Install and Use another Language in the Dictionary on Thunderbird
How to install and use additional language dictionaries on Thunderbird.
Open Search
Instantly take part of a message and search for it in Bing, Yahoo, Twitter or other websites.
Instant Messaging and Chat
As of Thunderbird 52.x, Thunderbird supports instant messaging and chat using IRC, XMPP, Twitter, and Google Talk
How to Customize Toolbars
This article explains how to customize the position and contents of Thunderbird toolbars.
Advanced panel - System, network, updates, and other advanced settings in Thunderbird
Learn about the Advanced panel of the Thunderbird Options/Preferences window including scrolling, system integration, network, update, certificates, etc.
Security panel - Junk, scam, antivirus, and password settings in Thunderbird
Learn about the Security panel of the Thunderbird Options/Preferences window including junk mail control, scam detection, antivirus integration, and passwords.
New in Thunderbird 102
Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 102.0.
FAQ Changing IMAP to POP
If your mail server supports both IMAP and POP, Thunderbird will use IMAP by default. Use these instructions to manually configure a POP account.
Creating a Newsgroup Account
Thunderbird can be used to read messages from and write messages to Usenet newsgroups.
How to disable or change the Thunderbird start page
Change the Thunderbird start page to any webpage, or set it to a blank page.
Names but no Email Addresses are Displayed
I can only see the message sender's name, not address!
Configuration Options for Identity
This page describes Thunderbird's configuration options that affect your identity.
Configuration Options for Tags
This page describes Thunderbird's configuration options as they relate to tagging messages.
Configuration Options for Attachments
This page describes Thunderbird's configuration options for attachments.
Certificates
Block a sender
Installing Thunderbird on Ubuntu Linux
How to Customize the New Mail Sound
Learn how to customize the sound that plays when a new email message is received.
Installing and Using another Language in the Dictionary
Privacy panel - Remote content and cookie settings in Thunderbird
Learn about the Privacy & Security options in Thunderbird (mail/web content, cookies, passwords, junk/spam detection, data collection, antivirus, certificates).
Unable to install add-ons (extensions or themes) in Thunderbird
This article describes various reasons that would cause an add-on not to be able to be installed and what you can do to fix the issue.
Dangerous directories
Some system folders are not allowed when setting Thunderbird storage location as they cause issues.
Primary Password is replacing Master Password in Thunderbird
Primary Password is replacing Master Password. Learn more about why we are making this change.
Unable to uninstall add-ons (extensions or themes)
This article describes how to uninstall an extension or theme that can't be removed normally.
New in Thunderbird 115 Supernova
Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 115.0 Supernova.
Unified Toolbar
Intro to the Unified Toolbar and how to customize the buttons for the different toolbars for: Mail, Address Book, Calendar, Tasks, Chat and Settings "Spaces."