Up & Coming Extensions
Typical Reply Requires Restart
Provides ability to send/receive typical replies in a team.Provides ability to send/receive typical replies in a team.
Adds a button to open Google Calendar in a new Tab
List addons in Windows' "Add or Remove Programs".
DeepDark for Thunderbird Requires Restart Featured
Dark mode for Thunderbird UI
ThunderPEC Requires Restart
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.
Contacts Sidebar Requires Restart
Displays the address books in a sidebar in Thunderbirds 3-pane-window and can be toggled with the F4 key or a toolbar button.
Visit my Contacts Sidebar site for recent versions and news.
Confirm-Address2 Requires Restart
Confirm E-mail addresses before sending mail.
This is forked from https://github.com/Meatian/confirm-address and works with Thunderbird 68.
Display Mail User Agent T Requires Restart Featured
Displays the mail program with which the selected mail was written
*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.
Auto Address Cleaner T Requires Restart
Remove comment, display name from addresses before sending mail.
This add-on is a fork of Auto Address Cleaner.
Custom Address Sidebar Requires Restart
Allow you to help address sidebar more useful.
Confirm-Address Requires Restart
Confirm E-mail address before sending mail
Flex Confirm Mail Requires Restart
Confirm mail address and attachments based on flexible rules.
Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)
Upload large attachments to your Cloud and send the link by email
Subject Cleaner Requires Restart
Remove extra strings from the subject while composing the message.
Nextcloud for Filelink Requires Restart
"Nextcloud for Filelink" is an Open Source Thunderbird extension which makes it easy to send large attachments with Thunderbird by uploading them first to a Nextcloud server and by then inserting the link into the body of your email.
Copy Folder Requires Restart
The missing Thunderbird "copy folder" feature! Copy folders or entire POP/IMAP accounts recursively to any location while maintaining folder structure.
TBDialOut Requires Restart
Place phone calls directly from Thunderbird's address book
Remove Duplicates Requires Restart
Removes duplicate messages
Auto Compress File Requires Restart
Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).