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Awesome Auto Archive

Automatically do Archive/Copy/Delete/Move actions based on user defined rules

Rated 4 out of 5 stars (25)
5,828 users
Updated August 19, 2017

ToggleReplied Requires Restart

Enables toggling of replied, forwarded, and redirected states of messages.

Not yet rated
0 users
Updated August 18, 2017

Theme Font & Size Changer

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

Rated 5 out of 5 stars (182)
93,225 users
Updated August 17, 2017

Blend In Requires Restart

Blends in OS-related values in User-Agent HTTP request header & a number of JS properties, so that Firefox (Thunderbird) appears to sites visited as running on the OS being used the most in the world. Thunderbird can also be blended in as Firefox.

Rated 4 out of 5 stars (10)
778 users
Updated August 15, 2017

Show All Body Parts

Enable the View | Message Body As | All Body Parts message display mode.

Rated 5 out of 5 stars (18)
6,821 users
Updated August 11, 2017

Signal Spam Requires Restart

Ajoute une fonction pour signaler, en un clic, les e-mails que vous considérez comme indésirables ou frauduleux à Signal Spam.
L'extension vous alerte si vous consultez un e-mail contenant des liens vers un site répertorié comme frauduleux.

Rated 3 out of 5 stars (28)
7,056 users
Updated August 10, 2017

CompactHeader Requires Restart Featured

Add symbol in header plane to switch between compact and expanded view. Options to switch between one or two lines compact view, which buttons should be displayed in header pane. For Thunderbird 36 and older use version 2.0.9 (see version history)

Rated 5 out of 5 stars (162)
94,165 users
Updated August 8, 2017

YouTube 2 Player

Send YouTube video links to an external player, downloader, etc,

Rated 5 out of 5 stars (11)
904 users
Updated August 3, 2017

Message Title Header

Show a title header above messages.

Not yet rated
23 users
Updated August 2, 2017

MailHops Requires Restart

MailHops maps the route an email took to get to you. Displaying the senders location, weather, user-agent and authentication used.

Rated 4 out of 5 stars (25)
2,297 users
Updated July 24, 2017

Full Web Page Screenshots (♥♥♥♥♥) Requires Restart

FireShot makes full web page screenshots. Demo: http://bit.ly/RlBQMV

Screenshots can be quickly captured and:

― Saved as Image or PDF
― Sent to clipboard
― Printed
― Annotated *
― Uploaded *
― E-Mailed *

* OS Windows only

Rated 4 out of 5 stars (545)
221,583 users
Updated July 21, 2017

ExQuilla for Microsoft Exchange Requires Restart

Thunderbird email accounts connecting to Microsoft Exchange Web Services. A 60 day trial of a paid add-on.

Update for Thunderbird 52: See https://exquilla.zendesk.com/hc/en-us/articles/115001708463. Summary: estimated on 2017-04-23 or try beta.

Rated 3 out of 5 stars (101)
14,949 users
Updated July 10, 2017

Header Tools Lite Requires Restart

Allows to modify the header and the source of messages

Rated 5 out of 5 stars (24)
4,721 users
Updated June 30, 2017

ReminderFox Requires Restart

ReminderFox displays and manages lists of reminders and ToDo's. ReminderFox makes sure you remember all of your important dates via easy-to-use lists, alerts, and alarms, right in your browser without the need for a separate calendar program.

Rated 4 out of 5 stars (490)
49,560 users
Updated June 26, 2017

CIX Forums Requires Restart

Open CIX Forums in Thunderbird. Free CIX accounts from https://forums.cix.co.uk/signUp.aspx?p=cixbasic

Rated 5 out of 5 stars (1)
9 users
Updated June 21, 2017

attachment column in search result list Requires Restart

Show the column for attachments in search results list. General search (edit-> search -> search emails) does not show by default if a message has attachments.
This addon adds this column, just as in a normal folder view.

Not yet rated
106 users
Updated June 15, 2017

Get Selected Mails Requires Restart

Gets new messages for selected mail accounts.

Rated 5 out of 5 stars (10)
757 users
Updated June 7, 2017

S3.Google Translator Requires Restart

S3.Google Translator adds the power of Google Translate’s automatic translations to your browser!
It supports translation of selected text, entered phrase or whole webpage between any of 80+ languages.

New Feature: Language learning!

Rated 5 out of 5 stars (386)
308,394 users
Updated June 3, 2017

Personal Level Indicators Requires Restart

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 (11)
1,939 users
Updated June 2, 2017

clamdrib LIN Requires Restart

"clamdrib LIN" ist wie der Name schon sagt die Weiterentwicklung des Add-on clamdrib, allerdings nur noch für Linux. Sämtliche E-Mails, Feeds und News werden auf Viren und anderes Ungeziefer geprüft und gemeldet. Gelöscht wird hierbei jedoch nichts!

Rated 4 out of 5 stars (3)
568 users
Updated May 27, 2017