Recently Updated Extensions

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Mail Redirect Requires Restart

Allow to redirect (a.k.a. "remail") mail messages to other recipients.

Rated 4 out of 5 stars (130)
36,907 users
Updated Oct. 9, 2019

Stay-Open Menu

Facilitates opening multiple items from the Bookmarks Menu and various other bookmark/history related dropdown menus.

Not yet rated
2 users
Updated Sept. 3, 2019

Unmangle Outlook Safelinks

Users of Office 365 Advanced Threat Protection wil change
all url's in emails to redirect them to an Microsoft filter before opening.

This plugin wil change the url back to the original value.

Rated 4 out of 5 stars (1)
199 users
Updated Aug. 27, 2019

RequestPolicy Continued

Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.

Rated 4 out of 5 stars (28)
31 users
Updated Aug. 18, 2019

ThreadKey Requires Restart

Strike the 'T' key to sort messages by thread, strike the 'U' key to sort them unthreaded again, just like the 'G' key switches to Grouped By Sort view.

Rated 4 out of 5 stars (25)
1,458 users
Updated Aug. 3, 2019

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.

Rated 4 out of 5 stars (83)
10,381 users
Updated July 1, 2019

Year view Requires Restart

Year view for calendar.

Rated 4 out of 5 stars (50)
2,655 users
Updated June 26, 2019

PDF Viewer for SeaMonkey

A fork of PDF.js with support for SeaMonkey 2.49.x.

Not yet rated
117 users
Updated June 8, 2019

MinimizeToTray Reanimated Requires Restart

MinimizeToTray Reanimated is an application mainly dedicated to Thunderbird to allow its minimization in the systray in one click. It is the update of MinimizeToTray Revived, which is not maintained anymore since the recent versions of Thunderbird.

Rated 5 out of 5 stars (104)
21,246 users
Updated May 17, 2019

Autoplay Toggle NonRestartless Requires Restart

This extension performs the same function as Autoplay Toggle, but as a legacy overlay extension. This should work in cases where Autoplay Toggle doesn't. SeaMonkey and Pale Moon are supported.

Not yet rated
41 users
Updated March 30, 2019

AutoCopy_rebirth Requires Restart

Lightweight add-on that automatically copies any highlighted text to clipboard.

Rated 4 out of 5 stars (3)
86 users
Updated March 13, 2019

Speed Start

Speed Dial & Start Page with flexible layout for fast access to sites via visual bookmarks

Rated 5 out of 5 stars (80)
734 users
Updated Feb. 27, 2019

ImportExportTools Requires Restart

Adds some tools to import and export folders and messages

Rated 4 out of 5 stars (228)
461,771 users
Updated Jan. 27, 2019

QFO - Quick Fuck Off Requires Restart

This extension serves the purpose of providing instant access to the FOAAS web service. FOAAS (Fuck Off As A Service) provides a modern, RESTful, scalable solution to the common problem of telling people to fuck off.

Rated 4 out of 5 stars (2)
48 users
Updated Jan. 24, 2019

Confirm-Address Requires Restart

Confirm E-mail address before sending mail

Rated 4 out of 5 stars (53)
27,002 users
Updated Dec. 28, 2018

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...

Rated 5 out of 5 stars (40)
1,449 users
Updated Dec. 5, 2018

ThunderBirthDay Requires Restart

Display birthdays from the Thunderbird addressbooks as events in Lightning.

Rated 4 out of 5 stars (88)
10,296 users
Updated Nov. 22, 2018

Highlighter Requires Restart

Quickly highlight some text in Thunderbird message composing windows.

Rated 4 out of 5 stars (74)
10,887 users
Updated Nov. 21, 2018

Join-NG Requires Restart

Join partial messages. Somewhat similar to MS Outlook Express "combine and decode".

Rated 5 out of 5 stars (4)
2,540 users
Updated Nov. 11, 2018

Awesome ldapInfoShow

Show contact photo and other info from Local Dir, Addressbook, LDAP, Facebook, LinkedIn, Flickr, Gravatar etc

Rated 4 out of 5 stars (11)
1,648 users
Updated Nov. 6, 2018