Recently Updated Extensions
CardBook Requires Restart
A new Thunderbird address book based on the CardDAV and vCard standards.
Phoenity Buttons Requires Restart
Adds some toolbar buttons using phoenity icons.
Displays message headers more compact (2 lines).
Auto Address Cleaner T Requires Restart
Remove comment, display name from addresses before sending mail.
Mail Summaries Requires Restart
Adds a summary of mail accounts and folders to replace the account central pane and the empty folder preview
SubSwitch Requires Restart
Simplify email categorization - it will be easier for you and others to manage mail. Define the set of prefixes for all emails you send or let SubSwitch to autodiscover it. While writing insert prefix to the title - choose one from your set.
Display Mail User Agent T Requires Restart
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.
Confirm-Address Requires Restart
Confirm E-mail address before sending mail
SmartTemplate4 Requires Restart
SmartTemplate⁴ offers an easy and powerful way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every mail identity, Stationery files can now be imported and used directly.
changeQuote Requires Restart
It's an extension that changes the format of reply mails.
Minimize on Close Requires Restart
Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.
Custom sync interval for Lightning Calendar Requires Restart
Allows custom synchronization intervals for remote calendars imported by Lightning Calendar (no fiddling in about:config necessary)
ReFwdFormatter Requires Restart
Remove the ">" prefix from quote when you make a reply.
[Source code] https://github.com/isshiki/ReFwdFormatter
Copy Patch Requires Restart
Copy email content to clipboard for application as patch.
Applies some filters, e.g. Outlook Safe Link unmangling, to ensure patch cleanness.
Phoenity Icons Requires Restart
Phoenity icons for Thunderbird
Mailing list filter Requires Restart
Mail filter search term using mailing lists (and not whole addressbooks).
MRC Compose Requires Restart
Remplace la liste d'adresses par les champs standards (Pour, Copie à, Copie cachée à) avec l'autocomplétion.
Provides standards fields (TO, CC, BCC) with autocomplete to Thunderbird's compose pane.
For bug reports, please use support email.
Account Colors Requires Restart
Associates user-defined colors with accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.
Mark GMail Read Requires Restart
Automatically marks all messages in the [Gmail] folder and all subfolders as read. If your GMail uses localized (translated) Gmail folder names, you set them in Thunderbird preferences: extensions.mark_gmail_read.folder_names.(all_mail|important|star
AttachmentExtractor Continued Requires Restart
This add-on is a (work in progress) fixed version of the original Add-on "AttachmentExtractor" which is no longer supported and fixed by the original author.
It Extracts all attachments from selected messages and then can delete, detach...
URL Link Requires Restart
URL Link is a small Thunderbird extension that allows you to select a non-URL in a mail/news message or web-page, and open it in a browser window.