Extensions by Name

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Simple Week View Requires Restart

A simple week view for Lightning, as in the print layout.

Rated 3 out of 5 stars (3)
616 users

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.

Rated 5 out of 5 stars (1)
225 users

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.

Rated 3 out of 5 stars (19)
3,869 users

Size in KB Requires Restart

Use KB for size in the thread pane

Rated 5 out of 5 stars (1)
438 users

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...

Rated 4 out of 5 stars (3)
8 users

Skyrock by RaouF Requires Restart

Blogs, profils, rencontres, groupes,photos,.. Avec Skyrock.

Not yet rated
1 user

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...

Rated 5 out of 5 stars (68)
6,715 users

Slim Add-ons Manager

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.

Rated 5 out of 5 stars (52)
8,653 users

Smart Folders For Single Account (restartless)

Adds smart folders (unified folders) for single account.
By default smart folders available only for two and more accounts.

Rated 5 out of 5 stars (3)
534 users

Smart OwnCloud Filelink Requires Restart

Filelink pour serveur Owncloud

Rated 4 out of 5 stars (1)
50 users

Smart Quotes Requires Restart

Enables “Smart” Quotes for Thunderbird Email

Rated 5 out of 5 stars (2)
99 users

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.

Rated 3 out of 5 stars (3)
166 users

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...

Rated 3 out of 5 stars (108)
2,213 users

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.

Rated 4 out of 5 stars (111)
1,221 users

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.

Rated 5 out of 5 stars (53)
20,041 users

Smiley Fixer Requires Restart

Fixes Wingding Smileys in Outlook-generated emails

Rated 5 out of 5 stars (17)
5,583 users

Smilie Inserter Requires Restart

Insert smilies in messages...

Rated 4 out of 5 stars (42)
534 users

SmilieInserter Plus Requires Restart

Insert smilies in messages.

Rated 5 out of 5 stars (18)
3,378 users

SMS Sidebar Requires Restart

If you work in front of a computer and send a lot of SMS text messages this is for you. Finally you can send SMS from the privacy of your Mozilla application. The focus of this addon is on efficiency, ease of use and easy access to advanced SMS featu...

Rated 2 out of 5 stars (17)
44 users

SMSalias MozClient Requires Restart

SMSalias is a Firefox/Thunferbird extension that enables you to send SMS messages directly from Browser/email application...

Rated 1 out of 5 stars (2)
38 users