Most Popular Extensions
This addon adds an entry in the right-click menu which re-threads selected messages together (groups selected messages into the same thread)". This is done by _modifying_ messages; the author of the addon declines any responsibility for data loss.
中止ボタンがサーニャに見えて困る Requires Restart
ToggleFullHeaders Requires Restart
Allows you to customise the message panel buttons to add a "Toggle Headers" button that will switch between showing and hiding the full headers.
Firedrive for Filelink Requires Restart
Add Firedrive support to Thunderbird's Filelink feature.
Send to MyInfo Requires Restart
Sends text selection or current web page URL to MyInfo.
Fritz!BoxDial Requires Restart
Forumzilla Requires Restart
Forumzilla lets you read news and blog feeds in your email application. It is similar to the feed reader built into Thunderbird, but it lets you download stories into any folder in any POP, IMAP, or local account (configurable per...
Notification Viewer Requires Restart
Identifies and displays the status of pending and received notifications (DSN, MDN) for messages sent with notification requests. To get full experience with this addon, don't forget to use DSN settings and MDN extended addons too.
Close Window on IMAP deletion Requires Restart
Closes the mail window on delete, although 'mark as deleted' is activated for IMAP
Open all links Requires Restart
Open all http(s) links in an e-mail message with a single click...
CopyHeader Requires Restart
Changes the mask character used in password fields.
GDirections Requires Restart
Finds directions on Google and Yahoo Maps based on your selected text and one of various home addresses that you can store.
~okeanos for Filelink Requires Restart
Add ~okeanos support to Thunderbird's Filelink feature.
Attachment Manager Requires Restart
An extension to manage attachments across multiple emails.
FolderCheck Requires Restart
Allows you to easily tell Thunderbird to check multiple folders for messages
Email Notification Randomizer Requires Restart
Extension to randomize the email notification sound. Each time an email is received, the configured email notification sound is updated from the set of wav files in the configured folder...
Open Addons Requires Restart
Open Add-ons window with one click.
Scroll To Key Requires Restart
When moving from Outlook, I was missing the function to scroll to a message in the active folder by entering a letter or short strings. I am also still missing the possibility to first sort descending by date and then keep that sort order when...