Troubleshooting

Discover solutions for common issues and explore best practices to diagnose and resolve problems.

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.

Thunderbird Thunderbird Last updated: 1 week, 4 days ago

Rebuilding the Global Database

Rebuilding the Global Database will initiate a re-indexing of emails and address book cards (newsgroup messages are not indexed).

Thunderbird Thunderbird Last updated: 08/28/2018

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.

Thunderbird Thunderbird Last updated: 12/28/2023

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.

Thunderbird Thunderbird Last updated: 07/17/2018

Troubleshoot Mode Thunderbird

How to use Thunderbird's Troubleshoot Mode to find and fix problems, especially if they are caused by add-ons.

Thunderbird Thunderbird Last updated: 11/24/2023

Cannot receive messages

If you cannot receive messages, this page provides a series of steps you can use to check for common problems.

Thunderbird Thunderbird Last updated: 12/28/2023

Cannot delete messages

This article explains how to fix issues with message deletion caused by a missing or corrupted trash folder.

Thunderbird Thunderbird Last updated: 07/14/2017

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.

Thunderbird Thunderbird Last updated: 10/07/2021

Profiling Thunderbird Performance

How to create a Thunderbird performance profile to find causes of high CPU load or slowness.

Thunderbird Thunderbird Last updated: 03/02/2024
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