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MEGAbird Requires Restart

Add MEGA support to Thunderbird's Filelink feature.

Rated 4 out of 5 stars (18)
2,634 users
Updated Dec. 12, 2018

Enigmail Featured

OpenPGP message encryption and authentication for Thunderbird and SeaMonkey.

Rated 4 out of 5 stars (221)
133,625 users
Updated Dec. 11, 2018

ThunderHTMLedit Requires Restart

Thunderbird HTML editor. This add-on adds a HTML tab to the composition window where you can see and edit the HTML source of the message.

Rated 5 out of 5 stars (9)
4,283 users
Updated Dec. 11, 2018

Secure Addressing Requires Restart

This add-on provides features to avoid sending emails to wrong addresses. Key features are a confirmation window of recipient's addresses upon sending, name and affiliation look up at mail composition and main windows, and safe auto completion.

Rated 4 out of 5 stars (26)
1,985 users
Updated Dec. 11, 2018

filemail Requires Restart

Move mails to the same folder where previously mails have been moved from this author by hitting a single key

Rated 3 out of 5 stars (11)
46 users
Updated Dec. 11, 2018

Provider for Exchange ActiveSync

Add sync support for Exchange ActiveSync (EAS v2.5 & v14.0) accounts to TbSync

Rated 5 out of 5 stars (1)
5,450 users
Updated Dec. 10, 2018

ThunderLink Requires Restart

Creates links to specific messages inside Thunderbird.

Rated 4 out of 5 stars (18)
256 users
Updated Dec. 10, 2018

Mark All Read Button Requires Restart

Adds toolbar buttons to Mark All emails as Read, Mark Thread as Read, and Goto Next Unread Thread.

Rated 4 out of 5 stars (36)
1,514 users
Updated Dec. 10, 2018

ConfirmFolderMove Requires Restart

Introduces a preference that allows users to be prompted before moving folders.

Rated 5 out of 5 stars (10)
2,644 users
Updated Dec. 10, 2018

ResetRec Requires Restart

ResetRec allows you to reset the recipient list.

Rated 5 out of 5 stars (6)
281 users
Updated Dec. 10, 2018

CategoryManager Requires Restart

Category manager for Thunderbird contacts, also allows to send an email to all members of a category (categories can be used as contact groups).

Rated 5 out of 5 stars (9)
4,196 users
Updated Dec. 10, 2018

NoComposeAccount Requires Restart

Have the option of Thunderbird always using the default sender account or a blank account when composing or replying to messages

Rated 4 out of 5 stars (13)
208 users
Updated Dec. 7, 2018

CardBook Requires Restart Featured

A new Thunderbird address book based on the CardDAV and vCard standards.

Twitter: @CardBookAddon

Rated 4 out of 5 stars (187)
40,870 users
Updated Dec. 7, 2018

Confirm-Address Requires Restart

Confirm E-mail address before sending mail

Rated 4 out of 5 stars (52)
21,808 users
Updated Dec. 7, 2018

Tidybird Requires Restart

Organize email into folders quickly and easily.

Rated 4 out of 5 stars (8)
86 users
Updated Dec. 7, 2018

Show InOut Compatible with Firefox 57+

Adds two columns to the list of mails. One shows an indicator wether a mail is incoming or outgoing, the other shows the sender or the recipient of the mail respectively...

Rated 5 out of 5 stars (40)
1,689 users
Updated Dec. 5, 2018

Owl for Exchange Compatible with Firefox 57+

Allows you to use your Exchange email accounts that use Outlook Web Access (OWA) with Thunderbird

Not yet rated
28 users
Updated Dec. 5, 2018

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 (125)
21,251 users
Updated Dec. 4, 2018

Emoji Requires Restart

Add emojis to your e-mails.

Rated 5 out of 5 stars (16)
10,564 users
Updated Dec. 3, 2018

Open With Requires Restart

Quickly test out your web pages in Chrome, Edge, Safari, or Opera. Open With opens the current page in your other browsers with just two clicks. Donate here: https://darktrojan.github.io/donate.html?openwith

Not yet rated
1,121 users
Updated Dec. 2, 2018