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Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Hasiera
Thunderbird
Email and messaging
Send and receive email

Email and messaging

Send and receive email

Everything you need to know about sending and receiving emails.

In English

Remote Content in Messages

Blocking a sender

Signatures

Organize your messages with filters

Send and receive messages in Thunderbird

OAuth2 Authentication for Yahoo, AOL and ATT

Message threading in Thunderbird - keep messages grouped by conversation

Cannot receive messages

How to Use Attachments

FAQ Changing IMAP to POP

Cannot send messages

Switch from POP to IMAP account

How to create and use mailing lists on Thunderbird

Message Tags - Categorize your email in Thunderbird

New email notifications in Thunderbird

Global Search

Archived Messages

Quick Filter Toolbar

How can I send a large attachment?

New Email Address

Message List Columns

What is the winmail.dat attachment?

Addressing an Email

Ignoring threads

Unify your POP email accounts with a global inbox

Thunderbird for Desktop and Thundermail

Microsoft EWS to Graph Migration October 2026

Archiving Messages

Hyperlinks in messages do not work

Inbox or Other Folder Full

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

File Link

FileLink

Digitally Signing and Encrypting Messages

How Thunderbird’s scam detection works?

Compact Inbox or Other Folder

Ignoring threads Redirect 1

Thunderbird 78 FAQ

Prerequisite for sending an encrypted email message

Thunderbird and OpenPGP Alias Keys

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