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Upgrade your Thunderbird experience with intelligent and clearer sender visualization that transforms how you identify and manage emails — making email management smoother and more intuitive.

Rated 4 out of 5 stars (15)
652 users

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BetterUnsubscribe

Adds a convenient button to the navigation bar, appearing whenever an unsubscribe option is detected in an email.

Rated 5 out of 5 stars (8)
1,358 users

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Google Contact - raccourci

Ajoute une icône dans la barre d'espaces pour ouvrir rapidement Google Contact.

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248 users

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Notion - Quick Access

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

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129 users

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Outlook Calendar - Quick Access

This extension adds a simple button to your Spaces toolbar that opens in a new tab, providing you with one-click access to Outlook Calendar.

Rated 2 out of 5 stars (5)
428 users

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Email Address Extractor

Sender-Recipient Exporter is a Thunderbird add-on that extracts sender email addresses, sender domains, and recipient email addresses from messages in the currently selected mail folder. The data is exported as a CSV file for easy analysis.

Rated 4 out of 5 stars (1)
71 users

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Huastec spell checker Requires Restart

This is a spell checker for Huastec (Tének) language. It is based on the Potosina variety.

Copyright: Jesus Carretero. University Carlos III of Madrid. Spain

Thanks to Kevin Scannell (SLU, USA)

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1 user

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Komi (kpv) spellchecker dictionary

Komi (kpv) dictionary for spell-checking in Firefox and Thunderbird

Rated 3 out of 5 stars (2)
11 users

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Udmurt spellchecker dictionary

Udmurt dictionary for spell-checking in Firefox and Thunderbird

Rated 5 out of 5 stars (1)
0 users

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Chechen [Noxchi] Spell Checker

Chechen Republic [Noxchi] Spell Checker

Rated 4 out of 5 stars (1)
1 user

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Interlingua - Spelling dictionary

Dictionario orthographic pro Interlingua.
Spelling dictionary for Interlingua.

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1 user

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Črkovalnik za slovenski jezik

Spell-checking dictionary for the Slovene language
Slovar za slovenski jezik

Rated 3 out of 5 stars (2)
128 users

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Changelogger

Gets changelogs for updated addons

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737 users

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Toggle Summary

Adds a Toggle Summary button

Rated 5 out of 5 stars (1)
84 users

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Český slovník pro kontrolu pravopisu (CC0)

Experimentální český slovník pro kontrolu pravopisu.

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4,830 users

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Attachment Viewer: view in a tab, slideshow

View attachments in TB
Images, office files, mp3, mp4, text, js
Use Dropbox viewer for 175 file types (in v3)
* Docx, xlsx, pptx, pdf preview
* Slideshow of images
* Zoom/drag
* Rotate/flip image
* Download dialog with thumbnail of image

Rated 4 out of 5 stars (20)
4,892 users

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TimetableForWeb

Display just previous schedule.
Update current time schedule.
Good to update future schedule too.

I thank God through Jesus Christ.

Not yet rated
9 users

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Mongolian Spellchecking Dictionary

Mongolian Spellchecking Dictionary

Rated 5 out of 5 stars (49)
11 users

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Clacks Overhead

In tribute to the late Sir Terry Pratchett, many users are adding the message "GNU Terry Pratchett" into the email header "X-Clacks-Overhead". Clacks Overhead shows users when this appears in their emails and displays the message included.

Rated 5 out of 5 stars (1)
43 users

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Google Messages Tab

Adds a button to open Google Messages in a new tab.

Rated 4 out of 5 stars (7)
517 users

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