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WarnAttachment

WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.

Rated 5 out of 5 stars (12)
2,801 users

New Mail Attention Requires Restart

This addon calls attention to main window on new message arrival.

Rated 4 out of 5 stars (52)
26 users

Get Selected Mails Requires Restart

Gets new messages for selected mail accounts.

Rated 5 out of 5 stars (12)
54 users

infoRSS Requires Restart

Displays RSS, Atom, Twitter, parsed HTML and NNTP feed in a scrolling area in the status bar. Compatible with podcasting RSS which can be downloaded directly. It's also a good Google email notifier.

Rated 3 out of 5 stars (81)
3 users

Tategaki Requires Restart

Tategaki allows vertical writing-mode on mail compose window.

Rated 5 out of 5 stars (1)
2 users

Bird Import Requires Restart

The extension allows to import e-mail messages from The Bat! mail client into Thunderbird.

Rated 3 out of 5 stars (8)
7 users

Scan'Mail Requires Restart

Scan'Mail is a QR Code generator that allows you to transfer easily information from your mail client to your mobile phone.

Rated 4 out of 5 stars (7)
45 users

Switch Message Colour Requires Restart

Adds a Toolbar-Button to Thunderbird to switch between the mails' original colouring and your user defined colouring.

Not yet rated
2 users

Safe Links Cleaner

Clean up the display of links rewritten by Microsoft ATP Safe Links when reading and composing mail, so the original links can easily be viewed and copied, while retaining the rewritten addresses as the actual target of all links.

Rated 4 out of 5 stars (2)
109 users

Display Mail User Agent T Featured

Displays the mail program with which the selected mail was written

*This addon is compatible with Thunderbird after Web Extesnsions support. Since development and operation check are done on Daily, it may not work on normal Thunderbird.

Rated 4 out of 5 stars (30)
10,927 users

UrgentMail

Raise X11 urgent flag if new mail is received.

This addon listens for incoming mails and causes the Thunderbird window to draw attention.

Rated 5 out of 5 stars (3)
258 users

Estimez votre CO₂

Estimez votre CO₂ quand vous rédigez un courriel en un simple clic ! Pendant sa rédaction, cliquez sur l'extension afin de connaître l'émission de CO₂e générée par l'ensemble du cycle de vie. Vous aurez aussi accès à différentes équivalences utiles.

Not yet rated
53 users

Show Outlook Appointments (vcal / ics) Requires Restart

An extension to show embedded Outlook calendar (vcal / ics) parts.

Thunderbird doesn't show calendar parts from Outlook appointment emails. This addon adds a button to download the embedded appointment as ICS to import it into another calendar.

Rated 3 out of 5 stars (5)
30 users