Email and messaging

Send and receive email

Everything you need to know about sending and receiving emails.

Remote Content in Messages

This page explains the privacy implications of allowing remote content like images to be displayed in email messages.

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Blocking a sender

This article explains how to block a particular sender in Thunderbird.

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Signatures

This article explains how to create and use custom signatures (text or images that are automatically appended to messages).

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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.

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Archived Messages

This article explains how the "archive" feature of Thunderbird works.

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Cannot receive messages

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

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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.

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New Email Address

This article explains how you can subscribe to a personalized email address with Thunderbird.

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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.

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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.

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Global Search

Thunderbird includes a message indexing system that improves search performance and displays faceted (categorized) search results.

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Quick Filter Toolbar

The Quick Filter toolbar is used to limit the number of messages that are displayed in the message list. Learn more about how to use it.

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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.

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Message List Columns

This article explains how to configure the columns that Thunderbird displays in message lists.

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Addressing an Email

How to add recipients to an email message in Thunderbird, and tips for handling many recipients efficiently.

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Thunderbird 78 FAQ

This document answers questions for new users of Thunderbird 78, in particular users who have upgraded from a previous version.

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Thunderbird and OpenPGP Alias Keys

How to use the OpenPGP Alias Keys feature to bypass Thunderbird's usual requirement that an OpenPGP public key must contain the recipient's email address.

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Digitally Signing and Encrypting Messages

This tutorial explains how to set up Thunderbird to digitally sign, encrypt and decrypt messages in order to make them secure.

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