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DOM Inspector Plus! [dm] Requires Restart

Improved DOM Inspector! [dm version]. Box Model new layout & more data, see screenshot!. Horizontal scroll for Dom-Tree, and some more.
Inspects the structure and properties of a window and its contents.

Rated 4 out of 5 stars (6)
30 users

AutoUp Requires Restart

Transform the first letter of a sentence in uppercase

Rated 3 out of 5 stars (10)
25 users

QFO - Quick Fuck Off Requires Restart

This extension serves the purpose of providing instant access to the FOAAS web service. FOAAS (Fuck Off As A Service) provides a modern, RESTful, scalable solution to the common problem of telling people to fuck off.

Rated 4 out of 5 stars (3)
6 users

AttachExtraTools Requires Restart

This extension gives more options and tools to attach files from compose window.

Rated 4 out of 5 stars (12)
44 users

Extra Folder Columns Requires Restart

This extension is for those TB3 users who want the multiple-columns view that TB2 allowed

IMPORTANT: If you are using Thunderbird 38 or later, uninstall this addon. The functionality is in core now.

Rated 4 out of 5 stars (214)
118 users

Český slovník kontroly pravopisu (bez diakritiky)

Slovník pro kontrolu pravopisu u textů bez diakritiky pro aplikace Mozilla

Rated 4 out of 5 stars (8)
2,401 users

Thunderbird Taiga Integration Requires Restart

Convert mails to user stories, tasks and tickets for the Taiga project management system. See https://pehei.de/post/thunderbird-taiga-integration for instructions.

Not yet rated
0 users

URLFilter

Block advertisement and access to adult sites

Rated 4 out of 5 stars (23)
15 users

SMTP Switch Reborn Requires Restart

SMTP Chooser.

Rated 4 out of 5 stars (7)
20 users

Profile Buttons

A button to be able to open the profile folder, along with two buttons to create profiles, and also switch the current profile.

Rated 3 out of 5 stars (9)
3 users

Any Confirmation Message before Send Requires Restart

You can set Any Confirmation Message before Send.

Rated 5 out of 5 stars (4)
10 users

Forward Requires Restart

Add Inline / As Attachment option to Forward button and Message context menu.

Rated 4 out of 5 stars (25)
104 users

Great DANE Requires Restart

Retrieve DANE S/MIME Certificates for Encryption/Signing.

This extension enables users to automatically retrieve S/MIME certificates using the Great DANE Engine (https://github.com/grierforensics/Great-DANE-Engine).

Not yet rated
0 users

Chat Notifier (for Thunderbird) Requires Restart

Permet d'etre notifié des nouveaux messages du chat.

Rated 4 out of 5 stars (16)
1 user

QuickFileMail Requires Restart

QuickFileMail is a Thunderbird Add-On that helps to quickly file messages in the right folder.

Rated 4 out of 5 stars (10)
3 users

CantoFish Requires Restart

CantoFish is a popup Cantonese-English dictionary for Firefox. It contains over 200,000 entries and works with both traditional and simplified Chinese characters. The Yale and Jyutping romanization systems are supported, as well as Mandarin pinyin.

Rated 5 out of 5 stars (29)
0 users

ZNotes Requires Restart

Save everything you like. Simple text notes and pages downloaded from the internet, rich multimedia. Store any files and contacts from your address book with notes.

Rated 5 out of 5 stars (15)
3 users

SavedSearchThemAll Requires Restart

A Thunderbird extension to automagically extend all the saved searches to all the foders!

Rated 4 out of 5 stars (2)
17 users

Message Notes Plus Requires Restart

Message Notes Plus allows to add notes to emails. The notes don't affect the email in any way.They are stored locally on your hard drive.
The commercial version is no longer available. More info on mnpforum.alehro00.com and forum.alehro00.com.

Rated 4 out of 5 stars (39)
23 users

TitleCase For Thunderbird Requires Restart

Transform strings into Title Case, Proper Case, Start Case, Camel Case, Upper Case, and Lower Case. Highlight your text and only changing what you highlighted.

Rated 4 out of 5 stars (14)
201 users