SmartTemplate4 offers an easy way to customize Thunderbirds default quote header by using templates. Templates can be created for every account as well as for global settings (for all email accounts).
Kopierar automatiskt markerad text till Urklipp.
AutoPager Fixed is a working version of AutoPager extension for Firefox 36+ (non-E10s mode) to autoload the next page(s) when you scroll pages.
ATTENTION: DISABLE THE ORIGINAL AUTOPAGER ADDON!
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Free unused memory that Firefox is currently using.
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Lets the user direct the submission of a form to a new tab or window. [Bug #17754]
Quickly highlight some text in Thunderbird message composing windows.
Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.
Adds many new mail filter actions - launch a file, suppress notification, remove star or tag, mark replied or unread, copy as "read", append text to subject.
Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.
SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).
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Viewer for OpenDocument Format office files. It can display documents saved from LibreOffice, OpenOffice, Calligra, Abiword, Microsoft Word, Excel, PowerPoint. The documents should be saved in the OpenDocument Format.
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Opens the Add-ons window to perform tasks on your installed Extensions, Themes, Plug-ins and Language packs.
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Open about:config to change hidden settings that cannot be edited from the Options window. All Mozilla based programs have settings that can not be changed in the options window.
Standalone calendar UI for Lightning
Note from Mozilla: This add-on has been discontinued. Try MinimizeToTray Revived instead.
Minimize applications to the system tray.
Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.
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GO ADS FREE NOW!
Browse Safely. Optimize Surfing
Open DOC, DOCX, PDF, PPT, PPTX and TIFF files linked in any webpage directly with Google Docs viewer using "1-click Online Document View", with a single left-click of your mouse / trackpad!!
This add-on allows you run your message filters automatically on outgoing messages after sending. In other words, it's a outgoing filter for thunderbird and seamonkey.