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Lightning Reminder Left Buttons Requires Restart

Tired to mistakenly press that "Dismiss All" button? Move the Lightining Reminder "Snooze all for" and "Dismiss All" buttons to the LEFT!
... and from version 2.0 you can keep them on the RIGHT, but swapped!

Rated 3 out of 5 stars (2)
10 users

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Diccionario Ortográfico de Español Colombia

Este diccionario no constituye un diccionario de definiciones sino un diccionario destinado para la corrección ortográfica de Español Colombia (es-CO). Colombian spanish (es-CO) spellchecker.

Rated 5 out of 5 stars (4)
623 users

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Slovar za slovenski jezik

Spell-checking dictionary for the Slovene language

Rated 5 out of 5 stars (16)
2,564 users

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Link Properties Plus Requires Restart

Provides extended link properties: size of linked file, last modified time, etc.

Rated 5 out of 5 stars (17)
17 users

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Thunderbird Biff Requires Restart

This add-on provides a visual indicator of new Thunderbird mail availability in supported clients (Firefox, Sunbird) and Thunderbird itself. Note: you MUST install this add-on in BOTH Thunderbird and supported clients as there are both client AND ser...

Rated 4 out of 5 stars (37)
5 users

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Greek - English (US) Spelling dictionary

Combined Greek - English (US) spell checking dictionary for Firefox - Thunderbird - Seamonkey

Rated 5 out of 5 stars (11)
668 users

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Address Move Button Requires Restart

Allow you to add a Address Move Button to mail compose window.

Rated 5 out of 5 stars (3)
177 users

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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

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ViewAbout Requires Restart

Enables access to various about: dialogs from the View menu.

Rated 4 out of 5 stars (18)
34 users

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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)
4 users

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AttachExtraTools Requires Restart

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

Rated 4 out of 5 stars (12)
43 users

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Český slovník kontroly pravopisu (bez diakritiky)

Slovník pro kontrolu pravopisu u textů bez diakritiky pro aplikace Mozilla

Rated 4 out of 5 stars (8)
2,480 users

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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.

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0 users

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Tiny JavaScript Debugger

TinyJSD is a JavaScript debugger for privileged code running Mozilla products like Firefox, Thunderbird, SeaMonkey. It serves to debug the application as well as extensions written in JavaScript.

Rated 5 out of 5 stars (8)
61 users

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URLFilter

Block advertisement and access to adult sites

Rated 4 out of 5 stars (23)
15 users

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SMTP Switch Reborn Requires Restart

SMTP Chooser.

Rated 4 out of 5 stars (7)
22 users

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ExtendIMAPFilters

This addon extends filtering to read messages downloaded during an IMAP synchronization (bug 308148)

Rated 5 out of 5 stars (3)
8 users

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Expand mailing list recipients Requires Restart

Adds a toolbar button to expand address book lists to its recipients - useful to stripe out some of them when sending mail...

Rated 4 out of 5 stars (20)
23 users

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Forward Requires Restart

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

Rated 4 out of 5 stars (25)
111 users

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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).

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0 users

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