Show Outlook Appointments (vcal / ics) Requires Restart
An extension to show embedded Outlook calendar (vcal / ics) parts.
Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.
Spanish (Mexico) spell checker dictionary
Uploads your large attachments to your DropBox instead of sending them by email
Open Google Calendar Requires Restart
Adds the Google Calendar web interface in a new Thunderbird tab. Creating and viewing events works like in a browser (Firefox, Chrome, ...)
BorderColors D Requires Restart
Shows a colorful border around the "New Message" window, so you can tell different identities apart.
Builds on the original BorderColors and the "GT" version, adding different border styles.
Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync
Open With can open your web links in any browser installed on your computer.
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird
ConfirmBeforeDelete Requires Restart
Ask a confirm before to delete some items
Dictionary Search Requires Restart
⦁ NEW! Floating Toolbars & Menus with autohide!
⦁ "Maximize your screen content space by adjusting window TitleBar, Tabs, Toolbars, etc!".
⦁ Multiple Configurable Actions for both screen-corner buttons: Application/'Home' & Close buttons!
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.
Seturgent Requires Restart
Sets the urgent flag (X11) of the Thunderbird window under Linux in case of new messages. Does ignore special folders like Drafts, Junk and such.
EasyRight2Left Requires Restart
Change direction from Left to Right and Right to Left for Persian, Arabic, Hebrew etc. This Thunderbird extension is based on ComposeRTF available in https://addons.thunderbird.net/en-US/thunderbird/addon/composertf/
This extension adds support for CalDAV & CardDAV accounts to the Thunderbird Sync manager "TbSync".
Mailing list filter Requires Restart
Mail filter search term using mailing lists (and not whole addressbooks).
YNote Requires Restart
Make some text notable on the each folder in folder's property dialog box.
Change prefs so that you use addons.thunderbird.net as the provider for add-on downloads and updates.
Events spanning multiple days Requires Restart
Displays multiple day events as a "spanning" event, without borders of the day-elements inside the month- and multiweek-view.
EditEmailSubject-hotfix Requires Restart
Hotfix for EditEmailSubject version 2.1.0 by jisse44
- fixed: does not overwrite Message-ID and references with undefined