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AutoProxy Requires Restart

Are you concerned about your privacy? Or, are you blocked from some websites by a firewall? And, are you arming yourself with a proxy? In that case, AutoProxy is designed for you! A tool to help you use your proxy automatically & efficiently.

Rated 4 out of 5 stars (382)
24,356 users

QuickFolders (Tabbed Folders) Requires Restart

The "Swiss army knife" of folders. Turn your favorites into tabs - open folders and subfolders, move mails without scrolling around or searching. powerful + easy.

See new mail at a glance after automatic filtering - supports quickFilters addon!

Rated 5 out of 5 stars (116)
20,864 users

XNote++ Requires Restart

Persistent sticky notes for Thunderbird associated to mails.
This is a port to Thunderbird >= 3 based on XNote 2.1.0 ( https://addons.mozilla.org/en-US/thunderbird/addon/3093 ) with bugfixes and additional features.

Rated 5 out of 5 stars (66)
20,547 users

ThunderPEC Requires Restart

ThunderPEC semplifica la gestione della Posta Elettronica Certificata (PEC) e delle comunicazioni PCT e FatturaPA in Thunderbird.

Rated 4 out of 5 stars (12)
20,414 users

Open With Requires Restart

Quickly test out your web pages in Internet Explorer, Chrome, Safari, or Opera. Open With opens the current page in your other browsers with just one click. Add Open With to your menus, toolbars and developer toolbox today!

Rated 4 out of 5 stars (160)
19,844 users

Google Search for Thunderbird Requires Restart

Adds Google Search to Thunderbird

Rated 4 out of 5 stars (17)
19,466 users

FoxyProxy Basic Requires Restart

FoxyProxy Basic is a simple on/off proxy switcher. More advanced features and configuration options are offered by FoxyProxy Standard.

Rated 4 out of 5 stars (31)
17,407 users

Mailbox Alert Requires Restart

Mailbox Alert allows you to specify, for each seperate mail folder, a message, sound and/or a system command that will be executed when new mail is found there. ...

Rated 4 out of 5 stars (102)
15,821 users

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 (99)
15,768 users

Notepad (QuickFox) Requires Restart

Everyday note-taking solution.

Rated 4 out of 5 stars (173)
14,666 users

ThunderBrowse Requires Restart

Did your friend send you a cool link? Want to read the rest of that interesting article? Don't want to open up your web browser just to view it? You don't have to! Just view it in Thunderbird with ThunderBrowse!

Rated 3 out of 5 stars (150)
13,593 users

Bamboo Feed Reader Requires Restart

Feed reader | RSS - ATOM - OPML

Rated 4 out of 5 stars (231)
13,291 users

Account Colors Requires Restart

Associates user-defined colors with accounts and identities. Applies these colors to accounts, identities, folders, message list, message headers and compose headers. Users will always know which accounts/identities they are working with.

Rated 4 out of 5 stars (97)
11,884 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 3 out of 5 stars (44)
11,325 users

Allow HTML Temp Requires Restart

This Add-on allows to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (if this is your default mode).

Rated 4 out of 5 stars (59)
10,441 users

Get/Send-Button (minimized MagicSLR) Requires Restart

A combined Get/Send-Button and a popup menu with additional functions.

You may want to use it together with the following Add-ons:
* Send Later Button (by me / Alexander Ihrig)
* Send Later (by jikamens)

Rated 4 out of 5 stars (47)
9,295 users

LocalFolder Requires Restart

Add as many local folders as you want to (like outlook PST).
NB. It doesn't import PST files.

Rated 4 out of 5 stars (11)
9,241 users

Folder Pane View Switcher Requires Restart

Add arrow buttons for rotating among folder views, and switch to "All Folders" view when hovering over the folder pane during drag & drop.

Rated 5 out of 5 stars (42)
9,199 users

ConfigDate Requires Restart

ConfigDate allows to configure the "Date" column in message threadpane. When displaying the message header, it is possible to display the (default) formated date or the senders local sent time (Date-String).

Rated 3 out of 5 stars (25)
8,856 users

Nostalgy Requires Restart

Keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion.

Rated 5 out of 5 stars (150)
8,320 users