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Markdown Viewer

Markdown document viewer.
Allows to visualize formatted markdown documents in browser.

Rated 4 out of 5 stars (34)
9,927 users

Personal Level Indicators

Shows an indicator so you can tell if an email was addressed only to you (»), a group (›), or a mailing list.

Rated 4 out of 5 stars (12)
3,247 users

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (7)
17,050 users

Open Multiple Locations

Adds a "File" menu option to open multiple locations at a time.

Rated 4 out of 5 stars (20)
5,183 users

Display Mail User Agent

Displays icon for user agent of received mails.

Rated 4 out of 5 stars (104)
34,878 users

IE View

Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE.

Rated 3 out of 5 stars (153)
67,801 users

ConfigDate

ConfigDate allows to configure the "Date" column in message threadpane. When displaying the message header, it is possible to display the (default) formated date or the senders local sent time (Date-String).

Rated 3 out of 5 stars (25)
10,627 users

Stop Tube HTML5 No Restart

Stops autoplay of YouTube HTML5 videos (WebM). It is Flash-Block equivalent for HTML5 videos.

Rated 3 out of 5 stars (63)
10,111 users

Speed Start No Restart

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

Rated 5 out of 5 stars (33)
5,558 users

Send Filter

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.

Rated 4 out of 5 stars (38)
4,982 users

AlexaTopSites No Restart

This add-on provides quick access to Alexa's Top Sites.

Rated 4 out of 5 stars (3)
1,433 users

SmartTemplate4

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.

Rated 5 out of 5 stars (49)
19,975 users

LookOut

LookOut is a plugin which allows Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

Rated 4 out of 5 stars (148)
210,662 users

Copy Sent to Current

Allows to place a copy of sent messages (aka FCC) into the currently active folder or any other folder you choose, when you create the message. Usually the copies are placed into the 'Sent' folder. For replies, you may also move the original message.

Rated 4 out of 5 stars (68)
3,566 users

Finnish spellchecker

Finnish open source Voikko-spellchecker for Mozilla and needed libraries.

Rated 4 out of 5 stars (98)
8,189 users

CheckBoxMate Lefedor Edition

Check multiple checkboxes by drawing a rectangle around them. FF6 version.
I've made this version since i did need it for use with RTM,

Rated 4 out of 5 stars (13)
1,096 users

LookOut+

LookOut is a plugin which allows to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment (aka winmail.dat).

This version is a fix for Seamonkey 2.*.

Rated 5 out of 5 stars (4)
1,934 users

Send Later

True "Send Later" functionality to schedule the time for sending an email.

Rated 5 out of 5 stars (47)
64,582 users

StartupMaster No Restart

Asks for the master password at startup (fixes multiple password prompt)

Rated 4 out of 5 stars (220)
19,297 users

P7MON

Abilita la gestione alternativa degli allegati P7M

Not yet rated
2,442 users