Extensions by Name
Simple Locale Switcher Requires Restart
An easier management of the user interface language
Simple Search-For Extension Requires Restart
Adds a "Search for" item to Thunderbird's context menu, like in Firefox.
Simple Steganography Requires Restart
Hide messages in PNG-32 images, extract them via context menu. The text is embedded invisibly by a "Least Significant Bit" algorithm.
You can also encode very short messages by re-sorting text lists and extract them via context menu.
Simple Week View Requires Restart
A simple week view for Lightning, as in the print layout.
Single Domain Requires Restart
Warns if you send mail from or to a specified domain. If there are multiple accounts in your profile, you can isolate one so that you can't send mail to that domain from outside or vis versa without warning.
sipgateFFX for Firefox and Thunderbird Requires Restart
The sipgate extension enables a practical overview for your account, direct call list notifcations, a speed access to several parts of sipgate's website, initiaiting click2dial calls, sending messages and faxes directly from your browser.
Size in KB Requires Restart
Use KB for size in the thread pane
SJCall Requires Restart
SJCall is a beta version of a VoIP extension enabling you to place telephone calls directly from the Mozilla applications using SJphone, the world-leading Internet softphone...
Skyrock by RaouF Requires Restart
Blogs, profils, rencontres, groupes,photos,.. Avec Skyrock.
Slideshow Requires Restart
Displays a slideshow of picture attachments. When email has attached pictures, it displays "View as Slideshow" button next to the attachment. Button click pops a slideshow window with all the images, allowing you to zoom in/out, save...
The Add-ons Manager slims down!
This add-on reduces the height of entries in the Add-on Manager, so you can display more of them at a time.
Adds smart folders (unified folders) for single account.
By default smart folders available only for two and more accounts.
Smart OwnCloud Filelink Requires Restart
Filelink pour serveur Owncloud
Smart Quotes Requires Restart
Enables “Smart” Quotes for Thunderbird Email
SmartFilters Requires Restart
Tired of writing a lot of filters? Install SmartFilters now to organise your mailbox automatically. It can sort out your mailing lists and robot emails.
SmartSave Thunderbird Extension Requires Restart
Now you can export your messages in a smarter way! You can export all folders and subfolder esaily from your local folder or from your IMAP...
SmartTemplate Requires Restart
This Add-on provides the smart and simple templates and abilities to customize the quote header flexibly.
Templates can be inserted automatically at the new/repling/forwarding message. A different template can be used respectively per account.
SmartTemplate4 Requires Restart
SmartTemplate4 offers an easy way to automatically create customized replies by auto-inserting various mail headers. Templates can be created for every account as well as for the default (all email accounts). Also supports the Stationery Add-on.
Smiley Fixer Requires Restart
Fixes Wingding Smileys in Outlook-generated emails