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WarnAttachment
WarnAttachment shows an additional dialogue to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.
New Mail Attention
Requires Restart
This addon calls attention to main window on new message arrival.
Get Selected Mails
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.
Tategaki
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.
Switch Message Colour
Requires Restart
Adds a Toolbar-Button to Thunderbird to switch between the mails' original colouring and your user defined colouring.
Email Cleaner
Email Cleaner is an extension that allows you to delete emails from specific senders or specific subjects older than a certain number of days. The plugin is multilingual.
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.
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.
UrgentMail
Raise X11 urgent flag if new mail is received.
This addon listens for incoming mails and causes the Thunderbird window to draw attention.
Estimate your CO₂
Estimate your CO₂ when composing an email with just one click! While writing it, click on the extension to find out the CO₂e emission generated by the entire life cycle. You will also have access to various useful equivalences.
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.
To create your own collections, you must have a Mozilla Add-ons account.
