Up & Coming Extensions

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Typical Reply Requires Restart

Provides ability to send/receive typical replies in a team.Provides ability to send/receive typical replies in a team.

Not yet rated
1,159 users

Google Calendar Tab

Adds a button to open Google Calendar in a new Tab

Rated 5 out of 5 stars (5)
3,143 users

List Addons in Windows' Programs

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

Rated 5 out of 5 stars (1)
2,073 users

DeepDark for Thunderbird Requires Restart Featured

Dark mode for Thunderbird UI

Rated 5 out of 5 stars (30)
10,698 users

ThunderPEC Requires Restart

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

Rated 5 out of 5 stars (31)
2,666 users

Contacts Sidebar Requires Restart

Displays the address books in a sidebar in Thunderbirds 3-pane-window and can be toggled with the F4 key or a toolbar button.

Visit my Contacts Sidebar site for recent versions and news.

Rated 4 out of 5 stars (243)
1,668 users

Confirm-Address2 Requires Restart

Confirm E-mail addresses before sending mail.
This is forked from https://github.com/Meatian/confirm-address and works with Thunderbird 68.

Rated 4 out of 5 stars (1)
1,191 users

Display Mail User Agent T Requires Restart 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.

Rated 5 out of 5 stars (6)
4,508 users

Auto Address Cleaner T Requires Restart

Remove comment, display name from addresses before sending mail.

This add-on is a fork of Auto Address Cleaner.
https://addons.thunderbird.net/thunderbird/addon/auto-address-cleaner/

Rated 4 out of 5 stars (4)
2,205 users

Custom Address Sidebar Requires Restart

Allow you to help address sidebar more useful.

Rated 5 out of 5 stars (22)
1,819 users

Confirm-Address Requires Restart

Confirm E-mail address before sending mail

Rated 4 out of 5 stars (58)
33,855 users

Flex Confirm Mail Requires Restart

Confirm mail address and attachments based on flexible rules.

Rated 4 out of 5 stars (8)
13,424 users

AutoarchiveReloaded Featured

Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)

Rated 4 out of 5 stars (12)
9,366 users

*cloud - FileLink for Nextcloud and ownCloud Featured

Upload large attachments to your Cloud and send the link by email

Rated 5 out of 5 stars (13)
4,975 users

Subject Cleaner Requires Restart

Remove extra strings from the subject while composing the message.

Rated 4 out of 5 stars (8)
986 users

Nextcloud for Filelink Requires Restart

"Nextcloud for Filelink" is an Open Source Thunderbird extension which makes it easy to send large attachments with Thunderbird by uploading them first to a Nextcloud server and by then inserting the link into the body of your email.

Rated 3 out of 5 stars (44)
944 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 (75)
1,694 users

TBDialOut Requires Restart

Place phone calls directly from Thunderbird's address book

Rated 5 out of 5 stars (12)
1,137 users

Remove Duplicates Requires Restart

Removes duplicate messages

Rated 4 out of 5 stars (10)
3,694 users

Auto Compress File Requires Restart

Compressor for attachment files. All platforms are supported (Windows, Linux and Macintosh).

Rated 5 out of 5 stars (18)
3,088 users