Message Composition

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BorderColors GT Requires Restart

How many time you sent an email from your wrong email address?
This add-ons allows you assign a different color to the compose window border for each of your email addresses. So you can immediately view from what account are you writing.

Rated 4 out of 5 stars (10)
49 users

EML-Editor

Addons to edit EML files and save your emails as EML file with their attachements.

Available on Github with MIT Licence :
https://github.com/pgpgeek/thunderbird-addon-eml-editor

Rated 2 out of 5 stars (1)
651 users

ThunderBird Ticker Requires Restart

Extension for creating support tickets based on mail.

Not yet rated
0 users

Custom Sender Address and Reply Requires Restart

Select sender mail address based on the recipient and reply with the same address

Rated 5 out of 5 stars (2)
15 users

CatchAll Bird

This extension improves the use of CatchAll-Addresses with Thunderbird.
It handles incoming messages addressed to all prefix@domain.tld for a fixed domain.
For each prefix the AddOn can create a new identity and folder.

Rated 5 out of 5 stars (4)
89 users

Ethical signature Requires Restart

Add a button to the email composition toolbar, which lets you insert an ethical signature.

Not yet rated
0 users

SmilieInserter Plus Requires Restart

Insert smilies in messages.

Rated 4 out of 5 stars (25)
21 users

AVIM Requires Restart

Vietnamese-language input method editor (IME). Type diacritics directly into any Web page, Web app, or dialog box. Convenient, comprehensive, secure.
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Bộ gõ tiếng Việt cho phép đặt dấu trực tiếp vào bất kỳ trang Web, ứng dụng Web, hộp thoại.

Rated 5 out of 5 stars (41)
2 users

Toggle Address Box

Adds a Address Box button, toggles the Address Box in the Composer window

Not yet rated
76 users

ThunderAI

ThunderAI uses the capabilities of ChatGPT to enhance email management.
It enables users to analyze, write, correct, and optimize their emails.
There is no need for an API key and is possibile to use this extension even with a free account!

Rated 5 out of 5 stars (1)
81 users

QFO - Quick Fuck Off Requires Restart

This extension serves the purpose of providing instant access to the FOAAS web service. FOAAS (Fuck Off As A Service) provides a modern, RESTful, scalable solution to the common problem of telling people to fuck off.

Rated 4 out of 5 stars (3)
4 users

TarotSignature Requires Restart

This version provides a custom button for the message composer.
You need to customize your toolbar of the message composer.
The signature is hard-coded into the source code.
The signature is NOT being inserted automatically on window-open.

Not yet rated
0 users

Proton Mail Toolbar Button

Adds a Proton Mail button to the toolbar. The button simply opens a new tab with the https://mail.proton.me webpage.

Rated 5 out of 5 stars (2)
442 users

Reply to All as Cc Requires Restart

Send a reply for recipients as CC except the sender, when you do "Reply to All".

Rated 4 out of 5 stars (11)
28 users

Strip inline images

Adds a button to the compose window to remove inline images from messages. The images are replaced with their filename in angled brackets.

This is helpful when replying to long message threads with lots of embedded images.

Rated 5 out of 5 stars (2)
124 users

Expand mailing lists

Adds an 'expand lists' button to the compose window. It replaces all mailing lists with their contacts.

Rated 5 out of 5 stars (2)
728 users

Freecosys - FileLink provider

Turns your huge files into short links

Not yet rated
185 users

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

Compose Responsive Images

When writing new emails, newly inserted images are made responsive by setting style="max-width:100%" and removing width/height attributes.

Rated 5 out of 5 stars (1)
141 users

X-Unsent support

Adds support for the X-Unsent header.

Rated 5 out of 5 stars (4)
70 users