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PhishNet

AI phishing detection tool

Rated 4 out of 5 stars (1)
4 users
Updated June 23, 2025

SubSwitch

Simplify email categorization - it will be easier for you and others to manage mail. Define the set of prefixes for all emails you send or let SubSwitch to autodiscover it. While writing insert prefix to the title - choose one from your set.

Rated 4 out of 5 stars (17)
404 users
Updated June 23, 2025

TidySubject

Declutter Re:, Fwd:, and EXT tags automatically.

Rated 3 out of 5 stars (2)
11 users
Updated June 17, 2025

quickFilters

Quickly generate mail filters on the fly, by dragging and dropping mails and analyzing their attributes. Create a filter in less than 10 seconds, it's as easy as: drag, click, click.

By popular demand, supports SORTING filters alphabetically.

Rated 5 out of 5 stars (75)
12,479 users
Updated May 2, 2025

ThunderSearch

Open a Google search browser window in Thunderbird from the context menu

Not yet rated
24 users
Updated April 5, 2025

Webpage Print from Context Menu

Print the current webpage from the context menu

Not yet rated
34 users
Updated April 5, 2025

Tag Toolbar / Tag Popup

Add toolbar for toggling tags.

Rated 4 out of 5 stars (98)
14,108 users
Updated March 24, 2025

ThunderCalc

A simple calculator for Thunderbird/Sea Monkey/Firefox, available in a pop-up window or a separate tab.

Not yet rated
26 users
Updated March 23, 2025

AutoBucket

This is an extension function that classifies emails into multiple buckets using AI(the Bayesian filter) and tags them.

Rated 3 out of 5 stars (15)
126 users
Updated March 18, 2025

PrioMailbox

PrioMailbox helps you prioritize your Thunderbird inbox by automatically tagging and highlighting important emails. Trainable tags organize your inbox efficiently, saving time and reducing distractions, with a simple, user-friendly interface.

Not yet rated
139 users
Updated Feb. 4, 2025

GMail Labels

Shows GMail labels in each message's headers panel. When using Thunderbird with a Gmail account, it is not possible to guess which Gmail labels a message was applied (and in which folders it can be found). This extension provides this information

Rated 4 out of 5 stars (19)
817 users
Updated Aug. 5, 2024

Tagger

Tagging messages by autocompletion

Quickly tag selected messages from a large list of existing tags using autocompletion, or create and add new tags, or clear them all.

Optionally tag incoming reply with tags of messages replied to.

Rated 5 out of 5 stars (2)
486 users
Updated July 28, 2024

MyTickets

Extension to mails that have TicketID: XXXX in Subject
It will Check to see if you have a "MyFolders" folder under your INBOX.
If yes it will create two child folders:
- Open
- Closed
IT will sync All Open Folder every 5 minutes

Not yet rated
15 users
Updated June 7, 2024

UUID - WES

WES Solucoes Tecnologicas Ltda

Not yet rated
6 users
Updated July 30, 2022

Tag Sequence Arranger Requires Restart

Enable you to arrange the tag sequences in their listbox.

Rated 5 out of 5 stars (19)
61 users
Updated Feb. 26, 2016

gLOC for Thunderbird Requires Restart

gLOC - a link that lets you find your way! Once you create your own gLOCs at https://app.gloc.io, you can easily insert them into your emails in Thunderbird. You can also use gLOCs someone else shared with you. Product of Wayz Solutions GmbH Germany.

Not yet rated
1 user
Updated Jan. 26, 2016