Extensions by Name
SelectionSK Requires Restart
Pops up user menu with useful tools (copy, highlight, translation, search, etc.) when text is selected with the mouse
Send and Archive Requires Restart
Adds a button to send an email and archive the original message.
Send and File Requires Restart
Allows to file outgoing messages in folder you prefer
Send Filter Requires Restart
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.
Send Format LDAP Requires Restart
Gets supported email formats (text/HTML) by the recipients from LDAP directories.
Send Later Requires Restart
True "Send Later" functionality to schedule the time for sending an email.
Send Later Button Requires Restart
A simple button to invoke the (already existing) send later functions.
Send to MyInfo Requires Restart
Sends text selection or current web page URL to MyInfo.
Send to xNode Requires Restart
Sends content to xNode for analysis. Provides information on domain names, IP addresses, eMail addresses, certificates and much more.
Sender Address Columns Requires Restart
Adds optional columns to the Thread Pane to allow sorting email messages by:
* Full sender address -- e.g. "firstname.lastname@example.org"
* Sender's domain -- e.g. "example.com"
* Sender's local part -- e.g. "someone"
* Sender's TLD -- e.g. ".com"
Sender Frequency Requires Restart
Adds a custom column for Sender Frequency to the thread pane
Sender Name Requires Restart
Sender Verification Anti-Phishing Extension Requires Restart
Protects you from phishing attacks by verifying the From: address domain name of emails as you read them. Sender Policy Framework (SPF) and DNS-based reputation lists are used.
SenderFace Requires Restart
SenderFace enables you to associate images (faces) with Email senders (from...
SendTools Requires Restart
Add SendAt option to the compose window to allow sending a message on a particular date and...
SendToSecondEmail Requires Restart
This Extension lets you send Mails to both, first and second email address...
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...
SendWithoutSubject Requires Restart
Send without subject and without confirmation alert
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.