Message Composition

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NestedQuote Remover

Remove nested quotes when replying to a mail.

Rated 4 out of 5 stars (13)
1,101 users
Updated Jan. 4, 2023

SpamTester

SpamTester allows you to test the spam score of your email using popular anti-spam software (SpamAssassin, Rspamd...). This is useful to know if your email will fall into the recipient's spam (or even get your mail server blocked).

Not yet rated
189 users
Updated Dec. 30, 2022

Simple Template

You will be able to create and automatically insert templates for each account.

Rated 4 out of 5 stars (1)
238 users
Updated Dec. 29, 2022

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)
439 users
Updated Dec. 20, 2022

@Contact Mention

This add-on mimics the mentions behavior on Outlook when mentioning a contact with the '@' sign. The contact selected is added as a link in the email body as well as to the recipent list of the email.

Rated 4 out of 5 stars (7)
682 users
Updated Dec. 5, 2022

Netiquette Checker

An integrated netiquette checker for EPITA students.

List all the netiquette rules that are not respected when writing an email.

Feel free to contirbute to the repository:
- https://github.com/d4ilyrun/netiquette

Not yet rated
5 users
Updated Nov. 30, 2022

Emoji

Add emojis to your e-mails.

Rated 4 out of 5 stars (62)
24,994 users
Updated Oct. 21, 2022

AddAccents

This extension allows you to easily insert accented characters as you type in firefox or thunderbird. It is similar to abctajpu (no longer supported). With the default settings, simply press "e" followed by "\" to insert "é" "a\" to insert "à" etc...

Rated 5 out of 5 stars (2)
155 users
Updated Oct. 10, 2022

Netiquette checker and wrapper

RFC 1855 compatible as well as Epita compatible.

This Addon provide a mail checker and an auto 72 column wrapper.
What is checked:
- Subject
- Greeting
- Body
- Salutation
- Quoting
- Signature

Rated 3 out of 5 stars (1)
34 users
Updated Sept. 29, 2022

smartCompose

A smart Plugin which provides functionalities to compose emails.

Not yet rated
11 users
Updated Sept. 28, 2022

Estimez votre CO₂

Estimez votre CO₂ quand vous rédigez un courriel en un simple clic ! Pendant sa rédaction, cliquez sur l'extension afin de connaître l'émission de CO₂e générée par l'ensemble du cycle de vie. Vous aurez aussi accès à différentes équivalences utiles.

Not yet rated
50 users
Updated Sept. 25, 2022

Mark Read on Reply

Mark messages as read when you replied to them.

Rated 5 out of 5 stars (2)
136 users
Updated Sept. 9, 2022

✨ Awesome Emoji Picker ✨

Modern, nice emoji picker that you can use to find and select emojis. It will be copied to your clipboard or even directly inserted into the e-mail, when you click on it.

You will certainly like it.

Rated 5 out of 5 stars (6)
4,663 users
Updated July 29, 2022

Reply with subaddress

Reply to a message that was sent to a subaddess with the same address.

Example: Your primary email is [email protected], you receive a mail to the subaddress [email protected], the sender of replies is set to [email protected].

Rated 3 out of 5 stars (3)
60 users
Updated June 29, 2022

Recently

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

Not yet rated
74 users
Updated June 28, 2022

Contact Finder

Autocomplete a list of contacts when sending a message by searching their name in the address book.

Not yet rated
360 users
Updated June 22, 2022

CloneMessage

When composing an email, CloneMessage allows you to duplicate the current state of the email.

Rated 5 out of 5 stars (1)
124 users
Updated June 17, 2022

Toggle Address Box

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

Not yet rated
75 users
Updated May 22, 2022

acus

Update 2023: This addon will be replaced by "arcus".

Modern encryption in Thunderbird

** Currently in testing phase **
What you can do:
1. Set your secret key and automatically decrypt emails
2. Generate a new key pair
3. Encrypt plain text

Not yet rated
4 users
Updated May 14, 2022

Textmarker

Highlights selected text when composing emails. Default colour is yellow - other colours are available via Options.
(Works only during writing an e-mail, i.e. only in the compose window.)

Rated 5 out of 5 stars (30)
35,708 users
Updated May 12, 2022