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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)
123 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)
82 users

FileLink Provider for OwnCloud and NextCloud

Uploads your large attachments to your OwnCloud or NextCloud server and instead inserts a public link into your email.

Rated 4 out of 5 stars (13)
998 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)
32,694 users

Grammar and Spell Checker — LanguageTool

Check your emails for spelling and grammar issues

Rated 4 out of 5 stars (31)
60,025 users

Emoji

It permits just with a single click to copy an emoji.
There is a search-box and the "Most used emojis" section (the first one).

If you want to send feedback or report bug, please go to https://github.com/Sav22999/emoji

Rated 5 out of 5 stars (12)
5,241 users

Notebird

Prendi appunti su tutte le email!

Rated 3 out of 5 stars (1)
117 users

Recently

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

Not yet rated
63 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)
736 users

FileLink Provider for Dropbox

Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.

Rated 4 out of 5 stars (21)
51,227 users

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

composeSelectMacro

定型文4つ保存しておいて、メールを作成する時にそのテキスト文を挿入できるツールです
You can prepare four fixed phrases, select them when composing an email, and insert them in the body of the email.

Not yet rated
29 users

Jitsi Meet event generator

Event and link generator for Jitsi Meet service.

Rated 2 out of 5 stars (2)
265 users

Replaceholder

Replace placeholders with date and time as you type.
入力画面の件名、本文内の各プレースホルダを日時や曜日等の文字列に置換します。

Rated 2 out of 5 stars (1)
10 users

Open in XPS | XPSLogic

U kunt met deze extensie tickets en taken openen door middel van de knop open in XPS

Er moet wel eerst een client worden ingevuld dit kunt u invullen onder opties

Not yet rated
7 users

Grammar, Proofreading & Spell Checker

Check the grammar and spelling directly inside Thunderbird using Wordeep technology

Rated 4 out of 5 stars (4)
649 users

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
56 users

reply-all-auto-cc

When reply to all is used, move original To: recipients to Cc:
Also forces "Cc:" to be displayed on all new messages.

GitHub Repo: https://github.com/cyb3rmonk/reply-all-auto-cc

Rated 5 out of 5 stars (4)
704 users

Paste code

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

Not yet rated
101 users

Limit non-BCC recipients

Check that number of non-BCC recipients does not exceed a parameter.

Rated 5 out of 5 stars (10)
776 users