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ThunderSuite - Customize your Quick Access Sidebar

This extension allows user editing of the spaces sidebar.
Create custom spaces from the extension options, to turn the new toolbar introduced with Supernova into your personal quick access toolbox.

Rated 5 out of 5 stars (8)
366 users

Clear History Button

Adds a button to launch the Clear History dialog

Rated 5 out of 5 stars (1)
74 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
3 users

ThunderWebTabs

Opens Google Keep, Google Photos, Android Messages or any other website in Thunderbird's tab.

Users who encounter "Browser not supported errors" should try changing their User Agent. For more details, please visit the "Support site".

Rated 5 out of 5 stars (3)
292 users

Deselect on Delete TB78

Disables selection of the next message when deleting.

A quick port of squib's "Deselect on Delete" for thundebird 78.

Rated 4 out of 5 stars (18)
489 users

Full Address Column

Adds a full sender and recipient e-mail column to message list panel.

Rated 5 out of 5 stars (73)
5,313 users

GetMyInvoices

Save your attached PDF invoices or archive and store complete invoice e-mails directly to your GetMyInvoices account from Thunderbird

Not yet rated
14 users

UnInbox - Quick Access

Quick Access to UnInbox in a new tab with just one click on a simple, stylish icon button on your Spaces toolbar.

Not yet rated
7 users

CollectAddresses

Collect all sender/recipient/... addresses and store in an addressbook

Rated 4 out of 5 stars (4)
737 users

Two Dynamic Birds

An extension of the "Two Little Birds" and "Dracula" themes that includes a toggle button to turn on dark mode.

The position of the light/dark toggle button can be customised to avoid it covering the cute birds!

Not yet rated
165 users

BestReply

BestReply is an add-on that aims to improve users’ experience by providing quick services to the user such as summarization of emails, response generations, as well as a smart chat with our AI model based on the email they are reading.

Rated 3 out of 5 stars (1)
14 users

Pushover Notifier

Send a Pushover notification when a new email arrives.

Plugin requires a Pushover account.

This plugin is not affiliated with or endorsed by Pushover. It was created independently. Use at your own risk.

Not yet rated
20 users

PrioMailbox

PrioMailbox helps you prioritize your Thunderbird inbox by automatically tagging and highlighting important emails. Trainable tags organize your inbox efficiently, saving time and reducing distractions, with a simple, user-friendly interface.

Not yet rated
71 users

Spacebar Clicker

With Spacebar Clicker, gamers can now test their spacebar speed within the browser. Every gamer can install the extension and practice to increase how many times they press the spacebar.

Not yet rated
0 users

Dictionnaire Moore

Le dictionnaire Moore / Moor Gom-Biis No-Tũur Gʋlsg Sebre : "Burkina Faso" Edition mars 2015 Cemie.

Not yet rated
0 users

Belarusian spellchecking dictionary (Taraškievica orthography) Requires Restart

Belarusian spellchecking dictionary (Taraškievica orthography)
Беларускі слоўнік праверкі артаграфіі (клясычны правапіс)

Rated 2 out of 5 stars (2)
0 users

GaelSpell Seanchló

Seo é an gnáthlitreoir GaelSpell, ach leis na consain bhuailte ḃ, ċ, ḋ, ḟ, ġ, ṁ, ṗ, ṡ, ṫ in ionad bh, ch, srl. An-oiriúnach do Twitter!

Rated 5 out of 5 stars (1)
0 users

Church Slavonic Spelling Dictionary

The spelling dictionary is based on the Hunspell spelling dictionary for Church Slavonic (Church Slavic). Numerals only from 1 to 9999 are recognized.

Not yet rated
1 user

Kashubian Spell Checker (Poland)

This Spell Checker may help writers verify correctness of their Kashubian spelling. It works under Firefox, Thunderbird, and SeaMonkey.

Nen werifikator kaszëbsczégò pisënkù mòże ùżëwac pòd Firefoksã, Thunderbird, ë SeaMonkey.

Rated 5 out of 5 stars (2)
6 users

Diccionario Papiamento

Diccionario ortografico di Papiamento - pap_AW

Not yet rated
10 users