Message and News Reading
Show Address Requires Restart
Shows the Sender/Recipient Mailaddress in the Mail List. Normaly, only the Name is displayed, which is wrong on most Spam Mails. Now you also can clearly see which of your Mail Addresses was used, extremly usefull if you are using a chatch-all...
Delete Trash Button Requires Restart
Adds an Empty Deleted button to the Toolbar
Prevent Delete Requires Restart
Prevent deletion of messages with a defined tag.
Delete Read Emails Requires Restart
Adds a button in Thunderbird's toolbar that enables you to delete all your read emails at once
New Thread To All Requires Restart
If you always have the same email recipient lists for your projects, this button may be the right thing for you.
It creates a new mail compose window with to, cc, bcc filled with names from the currently viewed email, but empty body, subject.
Open In Conversation Requires Restart
Make the default message list action be "Open Message in Conversation" when double-clicking or using the "Enter" key to open an email from the message list.
Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird
DeleteSimilar Requires Restart
Auto-delete similar newer incoming RSS messages.
No GUI (Hands free). To make it work you just rename the RSS folder to start with a minus.
i.e. Google News to -Google News
Uses Trash. Keeps oldest message to preserve Read status.
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...
AutoRssDeleter Requires Restart
Deletes rss message if the website link was clicked while Ctrl holding
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.
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.