Message Composition

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One-Click Forward

Forward emails directly through a dropdown of predefined recipients.

Configure recipients in settings. Use the message toolbar button "Quick Forward" to open a dropdown with your recipients and forward directly, or hold Shift to edit first.

Not yet rated
72 users
Added Nov. 8, 2023

Paste code

Thunderbird addon creating a context menu option that pastes code beautifully in HTML messages

Not yet rated
80 users
Added Oct. 4, 2023

Freecosys - FileLink provider

Turns your huge files into short links

Not yet rated
168 users
Added Sept. 21, 2023

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)
785 users
Added Aug. 13, 2023

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)
2,444 users
Added July 31, 2023

ShowContactFoto

Displays the contact photo/image/picture of the sender/recipients while reading/composing message.
Images are taken from local image files or Address Book (see addon's options page).

Rated 4 out of 5 stars (1)
38 users
Added July 31, 2023

ThunderFWD

Encaminhe múltiplos e-mails de uma só vez.

Not yet rated
20 users
Added July 10, 2023

S3 FileLink Provider

Uploads your large attachments to S3

Not yet rated
504 users
Added July 2, 2023

Aify

Rewrite or generate text based on promps using OpenAI's API.

Configure on settings page (make sure to save) and start to use when writing your emails!

You must have a payment method on record with OpenAI and an API key. OpenAI charge for use.

Rated 4 out of 5 stars (8)
370 users
Added May 11, 2023

Cypherdog Encryption

Encrypt any file, any text, and share via any medium, any time

Not yet rated
34 users
Added Feb. 28, 2023

Arcus

Modern encryption in Thunderbird - powered by Rust, rage and WebAssembly

Rated 5 out of 5 stars (1)
17 users
Added Feb. 14, 2023

FDK KIM Plugin

Dieses Plugin setzt automatisch die KIM-Header und den Betreff passend zu ihrem Anhang.

Anhängen werden analysiert und falls genau eine valide p7s Datei erkannt wird, werden die entsprechenden Daten automatisch gesetzt.

Not yet rated
64 users
Added Jan. 31, 2023

EnhancedReplyHeaders

Customizable headers for Thunderbird

Rated 4 out of 5 stars (6)
163 users
Added Jan. 6, 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
187 users
Added 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)
226 users
Added Dec. 28, 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)
451 users
Added 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)
655 users
Added 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
Added Nov. 30, 2022

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)
138 users
Added Oct. 24, 2022

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
104 users
Added Oct. 19, 2022