Fix slowness, crashing, error messages and other problems
Troubleshoot error messages on Thunderbird.
Profiles - Where Thunderbird stores your messages and other user data
Thunderbird saves personal information such as messages, passwords and user preferences in a set of files called a "profile".
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.
Troubleshoot Mode Thunderbird
How to use Thunderbird's Troubleshoot Mode to find and fix problems, especially if they are caused by add-ons.
Mozilla Crash Reporter TB
The Mozilla Crash Reporter dialog box appears when Thunderbird crashes and lets you send a crash report. Learn how it works and how to access your crash reports.
Cannot receive messages
If you cannot receive messages, this page provides a series of steps you can use to check for common problems.
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.
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.
Rebuilding the Global Database
Rebuilding the Global Database will initiate a re-indexing of emails and address book cards (newsgroup messages are not indexed).
Sending and Receiving Messages on Thunderbird
How to send and receive email messages using Thunderbird.
Cannot delete messages
This article explains how to fix issues with message deletion caused by a missing or corrupted trash folder.
unable launch older version on profile
You have launched an older version of Thunderbird
Profiling Thunderbird Performance
How to create a Thunderbird performance profile to find causes of high CPU load or slowness.
Compacting folders - Potential complications
Help the user understand some of the things that may go wrong when compacting.
