Email and messaging Send and receive email Everything you need to know about sending and receiving emails. Dena All articles and threads Contacts Junk email and spam Instant messaging Attachments Send and receive email Import and export email Calendar In English Remote Content in Messages Blocking a sender Organize your messages with filters Signatures How to create and use mailing lists on Thunderbird Message threading in Thunderbird - keep messages grouped by conversation Archived Messages Send and receive messages in Thunderbird New Email Address Cannot receive messages Cannot send messages Ignoring threads FAQ Changing IMAP to POP Hyperlinks in messages do not work How can I send a large attachment? Switch from POP to IMAP account Quick Filter Toolbar Addressing an Email What is the winmail.dat attachment? Digitally Signing and Encrypting Messages Unify your POP email accounts with a global inbox Prerequisite for sending an encrypted email message Global Search Message List Columns How to Use Attachments Thunderbird 78 FAQ Thunderbird and OpenPGP Alias Keys New email notifications in Thunderbird Archiving Messages Inbox or Other Folder Full 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 Message Tags - Categorize your email in Thunderbird