Up & Coming Extensions
Message & Address Printing Tools (NextGen)
New 78 Update! 68/78 Compatible
AddressBook in Tab Requires Restart
Adds a button that can be put in toolbars which opens the addressbook in a new tab like pastismans AddressBookTab
List addons in Windows' "Add or Remove Programs".
Simple Locale Switcher Requires Restart
An easier management of the user interface language
Allows you to resend (also known as redirect) email messages.
Uses 'cardbook' if installed
Bases on the add-on 'Mail Redirect' by Onno Ekker and Pawel Krzesniak
Please see the help page on how to use and why it sometimes does not work!
PrintingTools Requires Restart
Adds some options to print messages and addressbooks
Confirm mail address and attachments based on flexible rules.
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.
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.
Typical Reply Requires Restart
Provides ability to send/receive typical replies in a team.Provides ability to send/receive typical replies in a team.
The best Translator for Thunderbird 78!
Available also for Firefox!
Address Close Button Requires Restart
Adds a Address Close Button to mail compose window.
Confirm E-mail address before sending mail
Check the message contents and addresses before you send the message...
Synchronizes selected addressbooks with other instances of thunderbird
using ftp/webdav/imap servers
Display Quota Requires Restart
This extension will display the current status of your IMAP quota in thunderbird's statusbar and will warn you when you reach a configurable limit...
ThunderPEC Requires Restart
ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.
Place phone calls directly from Thunderbird's address book
Address bulk copy （アドレス一括コピー） Requires Restart
Thunderbird は Outlook のようにアドレス全選択からの「一括コピー」ができません。
Join-NG Requires Restart
Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".