Add-on Update Checker Requires Restart
Adds Tools menu item to check Add-ons for updates. Includes toolbar icon.
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.
Web Cache View Plus Proxy Requires Restart
Displays a web cache and/or web proxy view of a web page. You can call it from menu of tab, page context, link context and maybe while page loading.
SolusVM VPS Monitor Requires Restart
Status Monitor for SolusVM-backed VPS.
Lets the user direct the submission of a form to a new tab or window. [Bug #17754]
Flexible Identity Requires Restart
Selects an identity based on the recipients list when sending an email
GNOMErunner/GTK for Seamonkey 2.x Requires Restart
GNOMErunner/GTK - a classic unix theme for Seamonkey 2 (aka suiterunner)
using the GTK+ stock items and icons from the gnome iconset, resulting in a more consistent desktop integration on Unix.
EzStylist Requires Restart
Allows including CSS when composing e-mails.
Remembers last selected (hilited) extension/theme/plugin/userstyle in Add-ons Manager. Version 3.0 also includes sorting buttons. Turn off/on the add-on selection list box and/or fine tune behavior via its Options.
Highlighter Requires Restart
Quickly highlight some text in Thunderbird message composing windows.
MDN Interface Documentation Generator Requires Restart
Generate MDN Interface Documentation from IDL files.
Send Later Requires Restart
True "Send Later" functionality to schedule the time for sending an email.
1-click Online Document View Requires Restart
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!!
Thunderbird Integration for JIRA Requires Restart
This is a plugin for Thunderbird 3.3+ which is able to create Atlassian Jira issues out of e-mails or add the content of an e-mail as a comment on an Jira issue.
Contact Photos Requires Restart
Displays contact photos in the message header.
Year view Requires Restart
Year view for calendar.
Mailopen Requires Restart
Open an email file from the commandline
ToggleReplied Requires Restart
Enables toggling of Replied/Forwarded states of messages.
FiltaQuilla Requires Restart
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.