Message Composition

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Emoji

Add emojis to your e-mails.

Rated 4 out of 5 stars (62)
25,145 users

Stationery Requires Restart

Extension to mimic Outlook Express Stationery.
Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!

Rated 4 out of 5 stars (167)
1,200 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 (47)
32,442 users

ReFwdFormatter

Remove the ">" prefix from quote when you make a reply.

[Source code] https://github.com/isshiki/ReFwdFormatter

Rated 4 out of 5 stars (15)
2,182 users

changeQuote

It's an extension that changes the format of reply header.
You can choose between the standard Thunderbird reply header, a detailed reply header or a Customized reply header.
You can configure it in the Tools ->Add-on Preferences -> changeQuote.

Rated 4 out of 5 stars (21)
1,438 users

InsertSignature

Insert signature helps you to insert usually used text by your customization.

Rated 3 out of 5 stars (9)
1,306 users

Mail Merge

Create and Save or Send Multiple Individual and Personalized Messages from a Draft

Rated 5 out of 5 stars (225)
66,450 users

Flexible Identity Requires Restart

Selects an identity based on the recipients list when sending an email

Rated 4 out of 5 stars (39)
252 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

Transliterator

As-you-type phonetic conversion of text from one alphabet to another, as well as transliteration/detransliteration of selected text anywhere within documents. Supports multiple languages and custom transliteration schemes.

Rated 5 out of 5 stars (94)
21 users

Send Later Button

The Send Later Button extension enhances Thunderbird by enabling 'Send Later' even in online mode. It supports many Languages, ensuring a seamless user experience.

See: https://github.com/That-Developer-Guy/Send-Later-Button-Thunderbird/

Rated 1 out of 5 stars (1)
830 users

SendToSecondEmail Requires Restart

This Extension lets you send Mails to both, first and second email address...

Rated 4 out of 5 stars (2)
0 users

DS-BCC

Data protection extension, to avoid data mishaps with circular mails:

1. warning for e-mail with multiple recipients not in BCC (exceptions possible)
2. warning for roundmails with a different recipient domain
3. warning if PGP key is present

Not yet rated
117 users

Color Text Compose Buttons Requires Restart

Adds Text Color Buttons in Compose Toolbar and More: Pixel FontSize, Strikethough, Sub & Superscript, Lower & UpperCase. Also provide Tools: Insert iframe, Launch MathType, Maths & Greek Symbols, Load Template Variables and Duplicate Compose Window.

Rated 4 out of 5 stars (23)
309 users

Toggle Address Box

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

Not yet rated
76 users

Recently

Recently is a small Mozilla Thunderbird extension for having the most recent contacts at hand

Not yet rated
75 users

Posting Style Enforcer Requires Restart

Automatically converts top-posted messages to use bottom-positng or vice versa. Interleaved posts are left alone. Detects automatically added text and supports a per-contact list of exceptions.

Rated 5 out of 5 stars (3)
1 user

SMTP Switch Reborn Requires Restart

SMTP Chooser.

Rated 4 out of 5 stars (7)
25 users

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
24 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 (45)
168 users