Top-Rated Extensions

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Send Later Button Requires Restart

A simple button to invoke the (already existing) send later functions.

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3,684 users

ansitel Click-to-Dial Thunderbird Requires Restart

Click-to-Dial Plugin für ansitel VoIP-Telefonanlagen zum Markieren und Wählen von Rufnummern in Mozilla Thunderbird.

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19 users

Http Ping Requires Restart

Sheduled ping any server with http request

Запросы по расписанию к серверу по http

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1 user

TracEmail Requires Restart

A tool to raise awareness on email privacy. Visualizes the estimation of the path of your email messages on an interactive map. You can see which countries might have taken a copy of the message.

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206 users

List Addons in Windows' Programs

List addons in Windows' "Add or Remove Programs".

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357 users

ExtendIMAPFilters

This addon extends filtering to read messages downloaded during an IMAP synchronization (bug 308148)

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217 users

DSN Settings 2 Requires Restart

Adds user interface settings for Delivery Status Notification (DSN) requests. This addon is useful for settings for Delivery Notification request and better experience with Notification Viewer addon.

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331 users

teclib' Protocol Requires Restart

Assists to setup a chat account for teclib'.

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16 users

ClickGuard

Prevent accidental interaction with tab contents

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79 users

Classic Pop-up Alerts

This addon returns the old view of the pop-up notifications, as in Firefox 4.0 - 43.0

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839 users

Zonio Freebusy for Lightning Requires Restart

Finds when are people available for a meeting or event via Zonio Freebusy service. Displays freebusy blocks instantly in Invite Attendees window while attendees are being added. Works with both local calendar storage or any calendar provider.

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26 users

Delete Only Empty Folder Requires Restart

Disallows to delete not-empty mail folders.

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43 users

Sensitivity Header + SPX Requires Restart

Implement the "Sensitivity" header for outgoing messages (described in RFC 4021 section 2.1.55).
Forked from another add-on developed by ff_bob, added SPX header for Sophos security appliances

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14 users

RM: EXTERNAL: Requires Restart

Removes 'EXTERNAL: ' from the start of an email subject if it is preceded by 'RE:' or 'FWD:' (case insensitive). The removal is done after the 'Send' button is pressed.

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1 user

Rikaichan Japanese-Hungarian Dictionary File Requires Restart

This is a dictionary file add-on for the Rikaichan extension.

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63 users

InfoQube Firefox extension Requires Restart

Extension to import html into InfoQube

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23 users

Rspamd-spamness Requires Restart

Rspamd spam filtering system score visualization.

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300 users

Complete master password Requires Restart

The goal is to avoid to have to enter the master password on application startUp.
The extension is not self-sufficient, a script has to extract the master for a secure storage like gnome-keyring, then to transfer it through an environment variable.

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3 users

Check Attachment before Send Requires Restart

Confirms to send a mail with any attachment.

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53 users

Diagnostics for Adblock Plus

Diagnostics tool for Adblock Plus, provides some insight into internal processes of Adblock Plus.

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26,728 users