Up & Coming Extensions

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List Addons in Windows' Programs

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

Rated 5 out of 5 stars (1)
8,810 users

keepassxc-mail

MailExtension to get password from KeePassXC.

Rated 5 out of 5 stars (6)
1,073 users

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 (13)
1,058 users

Config Button

Adds a Config Button, opens about:config in a dialog or a new tab.

Rated 5 out of 5 stars (3)
2,048 users

FlexConfirmMail

Confirm mail address and attachments based on flexible rules.

(This project was renamed from "Flex Confirm Mail" to "FlexConfirmMail", due to a branding reason.)

Rated 4 out of 5 stars (11)
20,369 users

Thunderbook Requires Restart

Export messages (including RSS items) as e-books.

Rated 4 out of 5 stars (3)
3,229 users

DeepL翻訳

選択テキストをDeepLで翻訳

Rated 4 out of 5 stars (12)
10,757 users

TORPEDO - TOoltip-poweRed Phishing Email DetectiOn

TORPEDO is a tool for recognizing untrustworthy links (phishing). Move the mouse pointer over a link in your email. TORPEDO displays the correct web address in a tooltip and helps you to analyze it.

Rated 5 out of 5 stars (9)
1,345 users

StandardTexter

With the help of this Add-on, up to 99 pre-made texts (standard texts, text modules or even signatures) can be stored, which can then be retrieved and inserted when writing an e-mail.
The texts can be preformatted with HTML.

Rated 5 out of 5 stars (9)
1,788 users

mailmindr

Follow up for Thunderbird E-Mails.

Web: https://mailmindr.net/
Twitter: @mailmindr

Rated 4 out of 5 stars (76)
3,238 users

Attachment Extractor

Extract attachments from selected e-mails!

Instructions:
1. Select one or more messages
2. Right click and choose Attachment Extractor
3. Select a template for filenames and target folder
4. Done

Rated 3 out of 5 stars (69)
9,307 users

PrintingTools NG

PrintingTools NG enables many layout and formatting options for printing messages with header borders, sorting, attachment lists etc. PDF output can be auto named and Page options can ease printer settings.

It is your printing toolbox.

Rated 4 out of 5 stars (38)
25,481 users

HTML Source Editor

Allows to edit the source of the currently composed message. A simple alternative to ThunderHTMLedit.

Rated 5 out of 5 stars (12)
2,571 users

ConfirmBeforeDelete

Ask a confirm before to delete some items

Rated 4 out of 5 stars (18)
1,633 users

Filter Manager

Adds a Filters Button, opens Filter Manager

Rated 5 out of 5 stars (5)
1,680 users

QuickArchiver

Get things done and clean up your inbox! When you move an e-mail the first time, QuickArchiver remembers the destination folder and lets you move more e-mails with a single click. You can apply rules by sender, recipient, and subject.

Rated 4 out of 5 stars (30)
1,102 users

AI Anywhere for ChatGPT

ChatGPT enhancer - adds context menu, keyboard shortcuts, history and more!

Rated 5 out of 5 stars (6)
2,495 users

Start with Inbox

Selects the latest message in the Inbox after start of Thunderbird.

Rated 4 out of 5 stars (18)
1,116 users

Allow HTML Temp

Allows to have HTML temporarily enabled (and displayed) in the currently selected message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (according to your settings).

Rated 4 out of 5 stars (89)
10,630 users

Shrunked Image Resizer

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

*Shrunked Image Resizer is no longer maintained.*

Rated 4 out of 5 stars (88)
13,831 users