Up & Coming Extensions
DeepDark for Thunderbird Requires Restart
Dark mode for Thunderbird UI
Emoji Menu Requires Restart
Adds the ability to easily insert emojis into your composed messages in Thunderbird.
Upload large attachments to your Cloud and send the link by email
ConfirmFolderMove Requires Restart
Introduces a preference that allows users to be prompted before moving folders.
Adds the Google Calendar web interface in a new Thunderbird tab. Creating and viewing events works like in a browser (Firefox, Chrome, ...)
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...
Remove Duplicates Requires Restart
Removes duplicate messages
Uploads your large attachments to your WebDAV account instead of sending them by email.
Uploads your large attachments to your Box instead of sending them by email.
Minimize on Close Requires Restart
Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.
Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.
Monterail Dark 2 for TB>68 Requires Restart
Monterail Dark, a Thunderbird theme inspired by the mockup of Monterail
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.
Profile Switcher Requires Restart
Adds options to launch other profiles.
ImportExportTools NG Requires Restart Featured
Adds tools to import/export messages and folders (NextGen)
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...
Phoenity Icons Requires Restart
Phoenity icons for Thunderbird
Grammar Checker Requires Restart Featured
Checks grammar using LanguageTool.
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.
Colored Folders Requires Restart
Add colors to your folders in Thunderbird!
Must-have for better organisation + intuitive and speedy workfow...
This is project "Color Folders" (originally by Fisheater), corrected, resurrected, restaurated, extended and republished.