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Show SMTP Username Requires Restart

Displays username (if available) next to SMTP...

Rated 1 out of 5 stars (1)
0 users

Delete Junk Context Menu Requires Restart

Adds 'Delete Mail Marked as Junk' to folders' right click...

Rated 4 out of 5 stars (8)
19 users

Moji Requires Restart

An integrated sidebar-dictionary for Japanese and Chinese including kanji dictionary.

Rated 4 out of 5 stars (9)
276 users

Copy Plain Text Requires Restart

Copies text without formatting...

Rated 4 out of 5 stars (185)
246 users

Forumzilla Requires Restart

Forumzilla lets you read news and blog feeds in your email application. It is similar to the feed reader built into Thunderbird, but it lets you download stories into any folder in any POP, IMAP, or local account (configurable per...

Rated 3 out of 5 stars (5)
0 users

Open Long Url Requires Restart

Adds an option to your File menu to allow you to open long, multi-line...

Rated 5 out of 5 stars (7)
10 users

Easy Get Mail Button Requires Restart

Makes the 'Get new messages' button context-sensitive. Select an account root folder to get messages for that account, any other folder to get messages for all...

Rated 5 out of 5 stars (1)
0 users

Buttons! Requires Restart

Adds buttons to the Thunderbird toolbars such as Next! and Previous! buttons for navigating through all messages instead of just unread ones. See homepage for more...

Rated 4 out of 5 stars (61)
42 users

InspectorWidget Requires Restart

Adds toolbar button and context menus for invoking the DOM Inspector (DOMi) for either chrome or content elements.

Rated 5 out of 5 stars (10)
494 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)
9 users

FolderFlags Requires Restart

Allows users to edit the flags Thunderbird sets on folders.

Rated 5 out of 5 stars (8)
3,491 users

tzpush Requires Restart

Z-Sync to Thunderbird Addressbook
Will sync Thunderbird address book to Zentyal, Zarafa, Horde and outlook.com/hotmail.

Rated 4 out of 5 stars (19)
2,244 users

Search Results Sort By Date Not Relevance Requires Restart

Makes search results sort by "date" instead of "relevance" by default.

Rated 5 out of 5 stars (16)
3,110 users

Cert Viewer Plus Requires Restart

Certificate viewer enhancements: PEM format view, trust configuration

Rated 4 out of 5 stars (8)
2,919 users

ThunderKeepPlus

Google Keep for Thunderbird

Rated 5 out of 5 stars (10)
2,487 users

Show All Body Parts

Enable the View | Message Body As | All Body Parts message display mode.

Rated 5 out of 5 stars (19)
7,609 users

GNOME Keyring integration Requires Restart

GNOME Keyring integration

Rated 5 out of 5 stars (11)
1,639 users

Automatic Export Requires Restart

exports by an intervall or after pressing the button selected calendars in a defined folder in two modes - normal and backup...

On my homepage is the current version.
Here on this site it takes a long time after i publish a new version.

Rated 4 out of 5 stars (44)
2,505 users

Shrunked Image Resizer Requires Restart

Make your photos smaller, so they don't take forever to email or send to websites.

This extension is not being converted to a WebExtension.

Rated 4 out of 5 stars (33)
7,829 users

Provider for Google Calendar Requires Restart

Allows bidirectional access to Google Calendar

Rated 4 out of 5 stars (968)
323,166 users