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Windows 10 will reach EOS (end of support) on October 14, 2025. For more information, see this article.

Email and messaging

Send and receive email

Everything you need to know about sending and receiving emails.

In English

Remote Content in Messages

Organize your messages with filters

Blocking a sender

Signatures

Message threading in Thunderbird - keep messages grouped by conversation

Archived Messages

How to create and use mailing lists on Thunderbird

Send and receive messages in Thunderbird

Cannot receive messages

Switch from POP to IMAP account

FAQ Changing IMAP to POP

Message List Columns

New Email Address

Ignoring threads

Cannot send messages

How can I send a large attachment?

New email notifications in Thunderbird

Global Search

Hyperlinks in messages do not work

How to Use Attachments

Thunderbird 78 FAQ

Addressing an Email

Unify your POP email accounts with a global inbox

Digitally Signing and Encrypting Messages

Message Tags - Categorize your email in Thunderbird

Thunderbird and OpenPGP Alias Keys

Quick Filter Toolbar

Archiving Messages

Inbox or Other Folder Full

What is the winmail.dat attachment?

How can I avoid to reach the "over quota" limits of my mail server?

File Link

FileLink

How Thunderbird’s scam detection works?

Compact Inbox or Other Folder

Ignoring threads Redirect 1

Prerequisite for sending an encrypted email message

Illustration of hands

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