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Open Google Calendar

Adds the Google Calendar web interface in a new Thunderbird tab. Creating and viewing events works like in a browser (Firefox, Chrome, ...)

Rated 4 out of 5 stars (79)
21,306 users

stripImages

Remove all images from message with one click.
Places a "strip images" button on the toolbar of the message compose window.
Clicking the button will remove all images from the message.
This helps keep mailbox disk space down.

Rated 4 out of 5 stars (11)
230 users

PopMailListRecipients 2

Expands address book lists to recipients addresses in the compose window

Rated 4 out of 5 stars (5)
797 users

GCalTab

GCalTab is a Thunderbird add-on that opens Google Calendar website in a Thunderbird tab. It features a beautiful dark mode thanks to the DarkReader algorithm.

Rated 5 out of 5 stars (12)
1,629 users

changeQuote

It's an extension that changes the format of reply header.
You can choose between the standard Thunderbird reply header, a detailed reply header or a Customized reply header.
You can configure it in the Tools ->Add-on Preferences -> changeQuote.

Rated 4 out of 5 stars (25)
1,711 users

Quote Colors & Collapse

Configure text and background colors of quotes in mail and news messages. From up addon version 3 (Thunderbird 91) you can collapse quotes.

Rated 5 out of 5 stars (15)
4,114 users

Toggle Message Pane

Adds a Preview Button, toggles the message preview

Rated 5 out of 5 stars (8)
529 users

quicker quicksearch

make searching for emails faster:

Automatically insert into the quickfilter box: the author, subject or the email domain of the selected email.


No need to retype the address, if you want to search for all emails of this author.

Rated 4 out of 5 stars (8)
1,142 users

Google Calendar Tab

Adds a button to open Google Calendar in a new Tab

Rated 4 out of 5 stars (17)
7,728 users

GrapeVine for Salesforce

Connects Thunderbird to Salesforce.com

- Archive Emails from Thunderbird email accounts into Salesforce, automatically
- Type-Ahead search for Salesforce Contacts and Leads in compose/events
- Create Contacts/Leads in Salesforce from emails

Rated 5 out of 5 stars (2)
24 users

If This, Then! - IFTTT connector

*Trigger 'If This Then That' by message filters.
E.g.: On email with the file attachment xyz.log, send from sampledomain.com,
email body with text 'error 365', trigger action "error365" on IFTTT
IFTTT can push to web services, do home automation

Not yet rated
65 users

ResizeTbWidth

Resize Thunderbird window width.
Set window with three widths (1/1 (1920px), 1/2 (960px), 1/3 (640px)).

July 3rd 2021.

I love God.

Sungho.

Not yet rated
64 users

vault56 protection

vault56 protection protects against potentially malicious attached files and links. Links are rewritten to pass through vault56 URL protection servers and checked for trackers and malicious activity.

Rated 5 out of 5 stars (2)
52 users

Click Speed Tester

Test your click speed and practice different clicking techniques.

Not yet rated
3 users

FileLink provider for Send

Securely encrypt and upload large attachments to any Send service instance (formerly Firefox Send).

Rated 5 out of 5 stars (17)
45,939 users

Spellchecker Rumantsch Sutsilvan

Spellchecker Rumantsch Sutsilvan

Not yet rated
3 users

Microsoft 365 Link Opener

Open a shared link of a SharePoint or OneDrive file directly with the right app, instead of the browser.

Rated 5 out of 5 stars (1)
227 users

Open Google Keep

Adds an icon on the spaces toolbar to quickly open Google Keep

Rated 5 out of 5 stars (1)
275 users

British-English Dictionary (GB)

A strict British-English spell checker dictionary for Firefox, Thunderbird and SeaMonkey. This dictionary only includes words conforming to the preferred standard of British-English spelling.

Rated 5 out of 5 stars (2)
27,069 users

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 (3)
158 users