Top-Rated Extensions

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Highlight External Addresses Requires Restart

This extension helps to warn the user when composing a message to a mixed group of people both in and out of the sender's organization. External addresses are highlighted in orange as a reminder.

Rated 4 out of 5 stars (2)
102 users

SmartFilters Requires Restart

Tired of writing a lot of filters? Install SmartFilters now to organise your mailbox automatically. It can sort out your mailing lists and robot emails.

Rated 4 out of 5 stars (2)
11 users

hitsniffer visitors monitoring Requires Restart

hitsniffer analytics is a powerful and simple to use real time visitors activity monitoring tool for your website and blog. allows you to monitor your website visitors live and get extreme useful stats data.

Rated 4 out of 5 stars (2)
43 users

SecondOpinion Requires Restart

This extension implements a convenient way to check and upload attachments against VirusTotal.com

Rated 4 out of 5 stars (2)
19 users

PasteIP Requires Restart

Easy pasting of your IP address or User-Agent in a textbox. Comes in handy when posting on forums, etc.

Rated 4 out of 5 stars (2)
0 users

No Close Other Tabs Requires Restart

Removes "Close other tabs" context menu item.

Rated 4 out of 5 stars (2)
3 users

Lightning Invitation Notifier Requires Restart

This extension is an extension to Mozilla Lightning for Thunderbird.
It shows a toast message and opens the invitations window when an invitation arrives.

Rated 4 out of 5 stars (2)
2,422 users

backupMail Requires Restart

export an e-mail to selected folder as .eml format.

Rated 3 out of 5 stars (4)
62 users

BirdFon Requires Restart

BirdFon, a lightweight and elegant phone plugin, makes Thunderbird a speaking friend in your online life. With BirdFon you can call your friends in a way similar to the SkypeOut service. The major BirdFon advantage is that it allows you to make...

Rated 3 out of 5 stars (4)
0 users

TB Menubar Unread Notifier Requires Restart

Output the number of unread messages in all inboxes into the temporal file /tmp/testUnread. As a result, this output file can serve as an input for other applications to read and show notification either on a dock bar or on the menubar.

Rated 3 out of 5 stars (4)
4 users

confirm-mail Requires Restart

メール送信前に宛先メールアドレスと添付ファイル名を確認することができるアドオンです。

Rated 3 out of 5 stars (4)
272 users

Simple Week View Requires Restart

A simple week view for Lightning, as in the print layout.

Rated 3 out of 5 stars (4)
73 users

PLUGIN NO LONGER BEING MAINTAINED Requires Restart

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Rated 3 out of 5 stars (6)
0 users

Esign Requires Restart

Электронная подпись для сообщений в Thunderbird на основе API клиента "ГУЦ"

Rated 5 out of 5 stars (1)
0 users

accountex Requires Restart

Export/Import Account Settings.....

Rated 3 out of 5 stars (26)
20 users

GNOME keyring password integration Requires Restart

Extension that allows Firefox and Thunderbird to store passwords in Keyring, Gnome's default password store.

Rated 3 out of 5 stars (18)
0 users

Copy Folder Requires Restart

The missing Thunderbird "copy folder" feature! Copy folders or entire POP/IMAP accounts recursively to any location while maintaining folder structure.

Rated 2 out of 5 stars (70)
11,047 users

InfoNotary Configurator for Mozilla Requires Restart

Configures Mozilla for work with certificates issued by InfoNotary Plc.

Rated 3 out of 5 stars (4)
30 users

Periodic Memory Usage Dumper

Saves memory usage information periodically (mainly for troubleshooting), for web/addon developers.

Rated 4 out of 5 stars (2)
0 users

DOM Inspector Requires Restart

Inspect the DOM of HTML, XUL, and XML pages, including the mail...

Rated 3 out of 5 stars (6)
0 users

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