Customize controls, options and add-ons
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.
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.
Thunderbird and Junk / Spam Messages
This article explains how Thunderbird's adaptive filter learns to identify junk mail ("spam").
Signatures
This article explains how to create and use custom signatures (text or images that are automatically appended to messages).
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.
Archived Messages
This article explains how the "archive" feature of Thunderbird works.
Installing an Add-on in Thunderbird
Add-ons add functionality to Thunderbird or change its appearance. Learn how to install add-ons to Thunderbird.
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.
Using Multiple Profiles
Thunderbird saves personal information such as messages, passwords and user preferences in a "profile". This article describes how to use multiple profiles.
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.
Message List Columns
This article explains how to configure the columns that Thunderbird displays in message lists.
How to Customize Toolbars
This article explains how to customize the position and contents of Thunderbird toolbars.
Privacy panel - Remote content and cookie settings in Thunderbird
Learn about the Privacy & Security options in Thunderbird Includes Cookies, Remote Content, Junk/Scam detection
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.
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.
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.
Primary Password is replacing Master Password in Thunderbird
Primary Password is replacing Master Password. Learn more about why we are making this change.
Names but no Email Addresses are Displayed
I can only see the message sender's name, not address!
Configuration Options for Tags
This page describes Thunderbird's configuration options as they relate to tagging messages.
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.
How to Customize the New Mail Sound
Learn how to customize the sound that plays when a new email message is received.
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.
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.
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.
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 91
Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 91.0.
