Add-ons
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Sensitive Attachment Guard
Requires Restart
A Thunderbird add-on censor sensitive attachments (currently Microsoft Office documents) from being sent to unintended recipients.
Sensitivity Header
Requires Restart
Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
This allows the user to select Private / Personal / Company-Confidential (or none) for an outgoing message.
No longer maintained: See below.
Sensitivity Header + SPX
Requires Restart
Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
Forked from another add-on developed by ff_bob, added SPX header for Sophos security appliances
Sent-By-User column
Requires Restart
Adds a new column in message list-view, that will display the name of the user who sent the mail (read from a message header).
Manual configuration required. ONLY FOR THUNDERBIRD.
sepsis-console
Requires Restart
A general-purpose JavaScript console for all Mozilla toolkit applications.
sepsis-console (Deprecated)
Requires Restart
THIS VERSION IS DEPRECATED. Use https://addons.mozilla.org/en-US/developers/addon/sepsis-console instead. See the description below.
sepsis-console is a general-purpose JavaScript console for all Mozilla toolkit applications.
Serial Letter
Requires Restart
Provides the ability to start writing a template-derived letter directly from within the address book. Supports also multiple recipients. Supports only TeX and similar systems at the moment.
Set Default Columns
Requires Restart
Provides ability to set default visibility of columns in the thread pane.
Seturgent
Requires Restart
Sets the urgent flag (X11) of the Thunderbird window under Linux in case of new messages. Does ignore special folders like Drafts, Junk and such.
Seturgent
Requires Restart
Sets the urgent flag (X11) of the Thunderbird window under Linux in case of new messages. Does ignore special folders like Drafts, Junk and such.
Shedule Filters
Requires Restart
Sheduled run message filters
Запуск фильтров сообщений по расписанию
Shift Box
Shift-Delete Controller
Requires Restart
Controls shift-delete button behavior. Confirmation dialog is optionally displayed in user defined...
Show Address
Requires Restart
Shows the Sender/Recipient Mailaddress in the Mail List. Normaly, only the Name is displayed, which is wrong on most Spam Mails. Now you also can clearly see which of your Mail Addresses was used, extremly usefull if you are using a chatch-all...
Show Address Only
Requires Restart
Adds columns to display Sender/Recipients mailaddress only.
Show All Body Parts
Requires Restart
Enable the View | Message Body As | All Body Parts message display mode.
Show Calendar Week
Requires Restart
Shows the calendar week Thunderbird/Lightning calendar's moth and multi-week view.
Show InOut
Adds two columns to the list of mails. One shows an indicator wether a mail is incoming or outgoing, the other shows the sender or the recipient of the mail respectively...
Show Outlook Appointments (vcal / ics)
Requires Restart
An extension to show embedded Outlook calendar (vcal / ics) parts.
Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.
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