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Scriptable Notifications

Allows you to define an external script (bash, batch, python, ...) which is called so you can manage mail notifications / alerts the way you want.

Snap/Flatpak versions of Thunderbird not supported.

Rated 5 out of 5 stars (2)
246 users

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Message Header Toolbar Customize

You can change icon display and button order. You can also hide unnecessary buttons.

Rated 5 out of 5 stars (50)
4,338 users

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ThunderAI (ChatGPT in your emails!)

ThunderAI uses the capabilities of ChatGPT to enhance email management.
It enables users to analyse, write, correct, and optimize their emails.
You can use an API key, but it's also possible to use this extension even with a free account!

Rated 5 out of 5 stars (8)
973 users

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Mark Subfolders Read

Adds a context option to folders for marking all contents of the selected folder and all subfolders as read.

Rated 2 out of 5 stars (1)
21 users

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Balochi Spellchecker for UniBal Script

This add-on is a Balochi spellchecker based on the UniBal Balochi script.

This is a pre-beta version as the dictionary has 1000+ words and not all Balochi Affix rules are implemented.

Please use it and give your feedback

Rated 3 out of 5 stars (1)
1 user

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Kiswahili Spell Checker

Kiswahili Spell Checker

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50 users

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Lower Sorbian dictionary

Spellchecking dictionary for Lower Sorbian language.

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7 users

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Tatar spellchecker dictionary

Tatar dictionary for spell-checking in Firefox and Thunderbird.

Орфографический словарь Firefox и Thunderbird для проверки правописания татарского языка.

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1 user

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Babyish spellchecker

Babyish Spellcheck dictionary

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3 users

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Owl for Exchange

Allows you to use your Exchange and Office365 email account with Thunderbird using Outlook Web Access (OWA).

Rated 5 out of 5 stars (197)
40,862 users

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FileLink Provider for Box

Uploads your large attachments to your Box instead of sending them by email.

Rated 3 out of 5 stars (12)
11,440 users

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Get Map for Thunderbird

The "Get Map" button from the old address book is missing in Thunderbird 102 and 115, this extension puts it back. OpenStreetMap and Google Maps are both available. OpenStreetMap is configured by default and can be changed in the Add-ons Manager.

Rated 4 out of 5 stars (3)
224 users

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enUS deDE bilingual dictionary

This is a bilingual dictionary for American English and German Standard German.
It is meant for users who regularly write in German and English.
With it, you will not need to manually switch between dictionaries for the two languages.

Rated 5 out of 5 stars (1)
18,675 users

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Open Tab

Link open in new tab.

Rated 5 out of 5 stars (6)
454 users

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ScrollAnywhere

Scroll without touching the scroll-bar!
Press Middle (Right / Left) mouse button anywhere on the page to scroll just like with scrollbar.

Features also:
- "grab and drag" scrolling
- customizable scrollbars!
- the Momentum auto-scroll

Rated 5 out of 5 stars (1)
331 users

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Freecosys - FileLink provider

Turns your huge files into short links

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210 users

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S3 FileLink Provider

Uploads your large attachments to S3

Rated 1 out of 5 stars (1)
561 users

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Dark Plain Text

Use dark mode styling when reading plain text emails with a dark theme.

Rated 5 out of 5 stars (1)
486 users

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RainbowMemo

Memo with rainbow colors.

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29 users

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PGPGeek

Quick & easy PGP encryption / decryption tool
* Save & use many public encryption keys to encrypt mail content
* Save & use many private decryption keys to decrypt mail content

Using openPGP.js

Open Source
https://github.com/pgpgeek/pgpgeek

Not yet rated
321 users

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