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German Dictionary

German Dictionary (new Orthography) for spellchecking in Mozilla products

Rated 4 out of 5 stars (82)
215,448 users

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British English Dictionary (Marco Pinto)

A fork of Mark Tyndall's add-on, based on David Bartlett's
British Dictionary R1.19 for Firefox, Thunderbird and SeaMonkey.

V3.3.2 has 140 000+ new words and also fixes.

Rated 5 out of 5 stars (83)
164,348 users

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French spelling dictionary

Spelling dictionary for the French language.

Rated 4 out of 5 stars (53)
97,613 users

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Dizionario italiano

Add support for Italian to spellchecking

Rated 4 out of 5 stars (71)
73,092 users

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English United States Dictionary

English United States (en-US) Dictionary as shipped with Thunderbird 115 ESR and Firefox 115 ESR.

Rated 4 out of 5 stars (39)
68,186 users

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Spanish (Spain) Dictionary

Spanish/Spain Dictionary

Rated 4 out of 5 stars (167)
61,121 users

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FileLink Provider for Dropbox

Uploads your large attachments to your Dropbox instead of sending them by email. This uses Thunderbird's FileLink feature.

Rated 4 out of 5 stars (20)
49,573 users

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Polish Spellchecker Dictionary

Polish spell-check dictionary for Firefox, Thunderbird and SeaMonkey.

Rated 5 out of 5 stars (50)
49,028 users

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German dictionary (de_DE)

German dictionary igerman98 (de_DE, Germany), for Firefox, Thunderbird und Seamonkey.

Rated 4 out of 5 stars (24)
37,322 users

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Minimize on Close

Causes Thunderbird's main window to minimize instead of closing. You can still close Thunderbird through the menu.

Rated 4 out of 5 stars (80)
35,440 users

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*cloud - FileLink for Nextcloud and ownCloud Featured

Upload large attachments to your Cloud and send the link by email

Rated 5 out of 5 stars (47)
30,117 users

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Woordenboek Nederlands

Dutch dictionary with wordslist from OpenTaal.

Rated 3 out of 5 stars (70)
22,076 users

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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 (77)
21,826 users

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AutoarchiveReloaded Featured

Automatically archives old mails (Improved version of the orginal Autoarchive Add-on)

Rated 4 out of 5 stars (25)
21,585 users

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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 (1)
21,363 users

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enUS deDE bilingual dictionary

This is a bilingual dictionary for American English and German Standard German.
It is meant for users who regularly write in German and English.
With it, you will not need to manually switch between dictionaries for the two languages.

Rated 5 out of 5 stars (1)
17,210 users

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Addon Compatibility Check for TB 102/TB 115

Checks all installed add-ons for compatibility with Thunderbird 102 (or TB 115) and displays status information on a button in the main toolbar. This button will open a detailed overview, including links to alternatives for abandoned add-ons.

Rated 4 out of 5 stars (10)
16,063 users

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gContactSync Requires Restart

Synchronizes contacts & groups between Thunderbird and Google Contacts.

Rated 4 out of 5 stars (416)
15,320 users

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Manually sort folders

This extension allows you to manually sort (order) your folders in the folder pane of Thunderbird or automatically sort them, but in a better way. This extension also allows you to re-order accounts in the folder pane.

Rated 4 out of 5 stars (618)
15,239 users

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Český slovník pro kontrolu pravopisu

Slovník pro kontrolu pravopisu pro aplikace Mozilla

Rated 4 out of 5 stars (36)
14,319 users

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