Extensions by Name

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SenderFace Requires Restart

SenderFace enables you to associate images (faces) with Email senders (from...

Rated 3 out of 5 stars (10)
113 users

SendTools Requires Restart

Add SendAt option to the compose window to allow sending a message on a particular date and...

Rated 3 out of 5 stars (25)
109 users

SendToSecondEmail Requires Restart

This Extension lets you send Mails to both, first and second email address...

Rated 4 out of 5 stars (2)
53 users

SendVia Requires Restart

Sometimes you need to select a specific SMTP server for sending the current message? Then SendVia is for you.

SendVia provides the `Send' button of message composition windows with a drop-down menu from which you can select or create the SMTP server...

Rated 4 out of 5 stars (12)
236 users

SendWithoutSubject Requires Restart

Send without subject and without confirmation alert

Rated 3 out of 5 stars (11)
287 users

Sensitive Attachment Guard Requires Restart

A Thunderbird add-on censor sensitive attachments (currently Microsoft Office documents) from being sent to unintended recipients.

Not yet rated
2 users

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.

Rated 4 out of 5 stars (1)
78 users

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

Not yet rated
32 users

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.

Rated 5 out of 5 stars (1)
37 users

sepsis-console Requires Restart

A general-purpose JavaScript console for all Mozilla toolkit applications.

Not yet rated
6 users

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.

Not yet rated
2 users

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.

Not yet rated
103 users

Set Default Columns Requires Restart

Provides ability to set default visibility of columns in the thread pane.

Rated 3 out of 5 stars (2)
73 users

setenv

Automatically set environment variables based on preferences.

Not yet rated
4 users

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.

Rated 5 out of 5 stars (2)
61 users

Shedule Filters Requires Restart

Sheduled run message filters

Запуск фильтров сообщений по расписанию

Rated 5 out of 5 stars (1)
149 users

Shift Box Requires Restart

Replay your INBOX!

Not yet rated
62 users

Shift-Delete Controller Requires Restart

Controls shift-delete button behavior. Confirmation dialog is optionally displayed in user defined...

Rated 3 out of 5 stars (9)
254 users

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...

Rated 4 out of 5 stars (22)
294 users

Show Address Only Requires Restart

Adds columns to display Sender/Recipients mailaddress only.

Rated 4 out of 5 stars (26)
3,834 users