Messages with large attachments are often rejected by mail servers. Thunderbird can use web-based storage services to send large file attachments.
This article explains how the "archive" feature of Thunderbird works.
This article explains how to create and use custom signatures (text or images that are automatically appended to messages).
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.
The menu items File, Edit, View, etc. are located in the menu bar. This article will help you restore a missing menu bar.
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.
Learn about the Advanced panel of the Thunderbird Options/Preferences window including scrolling, system integration, network, update, certificates, etc.
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.
Thunderbird can be used to read messages from and write messages to Usenet newsgroups.
Change the Thunderbird start page to any webpage, or set it to a blank page.
Add-ons are extensions and other additions that add new functionality to Thunderbird or change its appearance.
I can only see the message sender's name, not address!
This article explains how to configure the columns that Thunderbird displays in message lists.
Thunderbird saves personal information such as messages, passwords and user preferences in a "profile". This article describes how to use multiple profiles.
This page describes Thunderbird's configuration options as they relate to tagging messages.
How to install and use additional language dictionaries on Thunderbird.
Instantly take part of a message and search for it in Bing, Yahoo, Twitter or other websites.
This article explains how Thunderbird's adaptive filter learns to identify junk mail ("spam").
Learn how to customize the sound that plays when a new email message is received.
This article explains how to customize the position and contents of Thunderbird toolbars.
Add-ons add functionality to Thunderbird or change its appearance. Learn how to install add-ons to Thunderbird.
Learn about the Security panel of the Thunderbird Options/Preferences window including junk mail control, scam detection, antivirus integration, and passwords.
Learn about the Privacy panel of the Thunderbird Options/Preferences window including remote images, and cookies.
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.
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.
Some system folders are not allowed when setting Thunderbird storage location as they cause issues.
Primary Password is replacing Master Password. Learn more about why we are making this change.
This article describes how to uninstall an extension or theme that can't be removed normally.