Blocking a sender
This article explains how to block a particular sender in 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.
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 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.
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.
IMAP Synchronization
IMAP stands for the Internet Message Access Protocol. It enables a mail client (such as Thunderbird) to access messages stored on a mail server. It is more modern and fully featured than POP (Post Office Protocol), which is the other major protocol for accessing mail messages. Most email providers now support IMAP. To see whether your account uses IMAP or POP, check the Server Settings page in the Account Settings.
Switch from POP to IMAP account
This article explains how to switch from a POP to an IMAP account in Thunderbird.
Cannot send messages
If you cannot send messages with Thunderbird, this page provides a series of steps you can follow to check for common problems.
What is the winmail.dat attachment?
When sending messages from email clients that use the Microsoft Exchange server, a file attachment called winmail.dat may be added. Learn how to prevent this.
Ignoring threads
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.
Make Thunderbird the Default Mail Client
If Thunderbird is specified as your system's default email application, it will integrate with other applications (such as word processors and web browsers).
Cannot receive messages
If you cannot receive messages, this page provides a series of steps you can use to check for common problems.
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.
Unify your POP email accounts with a global inbox
We'll show you how to merge inboxes from various POP accounts to make what is called a global inbox, where all of the mail can be displayed in one place.
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.
Open Search
Instantly take part of a message and search for it in Bing, Yahoo, Twitter or other websites.
New in Thunderbird 102
Detailed introduction to the most interesting new features, improvements, and changes visible to users in Thunderbird 102.0.