Add-ons
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StickyCharset
Requires Restart
Allows persistent charset changes on individual messages. For use with messages that have erroneous charset header...
Stop Ignoring Reply:To
Requires Restart
Default "Reply" functionality pays attention to "Reply-To" in original email
StormCows
Requires Restart
Allows two-way access between Remember The Milk and calendar events or todo items.
Strip inline images
Adds a button to the compose window to remove inline images from messages. The images are replaced with their filename in angled brackets.
This is helpful when replying to long message threads with lots of embedded images.
stripImages
Remove all images from message with one click.
Places a "strip images" button on the toolbar of the message compose window.
Clicking the button will remove all images from the message.
This helps keep mailbox disk space down.
Stylish Tools
Requires Restart
Quicker access to several Stylish features through a toolbar button and/or keyboard shortcuts. Available for Firefox, Thunderbird, and SeaMonkey
Stylish-Custom
Subject Cleaner
Requires Restart
Remove extra strings from the subject while composing the message.
Subject Manager
Submit Word (Romanian)
Requires Restart
An extention that allows users to submit words for inclusion in the Romanian dictionary.
SubSwitch
Simplify email categorization - it will be easier for you and others to manage mail. Define the set of prefixes for all emails you send or let SubSwitch to autodiscover it. While writing insert prefix to the title - choose one from your set.
SUNBIRD Button-**32** bit version-for Firefox 4.* and Thunderbird 3.*
Requires Restart
A button to call up the Sunbird Calendar from Firefox and Thunderbird toolbars. This version for 32-bit operating system!
SUNBIRD Calendar button- **64 bit** version for Firefox 4.* and Thunderbird 3.*
Requires Restart
A button to call up the Sunbird Calendar from Firefox and Thunderbird toolbars . 64 BIT operating system version!
Super Date Format
Requires Restart
Fully customize the date format of the Date/Received column.
SuperOffice Mail Link
Requires Restart
Archive mail in SuperOffice CRM software from Thunderbird
Switch Link External Handler
Requires Restart
Provides abilities to switch external handlers to open links.
Switch Message Colour
Requires Restart
Adds a Toolbar-Button to Thunderbird to switch between the mails' original colouring and your user defined colouring.
Sync On Arrival
Requires Restart
Downloads new message headers (and bodies, if configured) immediately when Thunderbird detects new messages in an IMAP folder - that's more or less what the "download_on_biff" preference promises to do, but somehow fails to deliver...
To create your own collections, you must have a Mozilla Add-ons account.
