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German Dictionary (de-DE), classical and reformed
German Dictionary according to the classical or reformed spelling standards for spell-checking in Firefox and Thunderbird ++
Deutsches Wörterbuch nach den bewährten oder reformierten Regeln für die Rechtschreibprüfung in Firefox und Thunderbird
Norsk bokmål ordliste
Norsk bokmål ordliste for Mozilla Firefox, Mozilla Thunderbird og SeaMonkey.
Bengali (Bangladesh) Dictionary
TexTra
Hindi Spell Checker
This is a real time spell checker for Hindi, supported on Firefox,
Thunderbird, and Seamonkey.
Correct Identity
Ever sent mail from the wrong email address because you forgot to select the correct identity?
Hebrew spell-checking dictionary (from HSpell)
Hebrew spell-checking dictionary for Firefox and Thunderbird. Generated from data of the HSpell project version 1.4, and distributed freely under the AGPLv3.
Vietnamese Dictionary
Enables spell checking in Vietnamese with a wordlist based on Hồ Ngọc Đức’s Free Vietnamese Dictionary Project.
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.
Slovar za slovenski jezik
WarnAttachment
WarnAttachment shows an additional dialog to confirm potentially dangerous attachments. Some attachments like executables etc. are completely blocked. This reduces the risk of malware especially for inexperienced users.
Unmangle Microsoft ATP Safelinks
Users of outlook.com and o365 who have Advanced Thread Protection enabled will have all URL's in emails changed to redirect them to an Microsoft filter before opening. This is a bad idea.
This plugin will change the URL back to the original value.
EuropeanMX Spam Reporter
Train your EuropeanMX filter by reporting unrecognized spam back to us.
Greek - English (US) Spelling dictionary
Combined Greek - English (US) spell checking dictionary for Firefox - Thunderbird - Seamonkey
Paranoia
Check if your emails arrived TLS-encrypted (and which corporations were able to read it nevertheless)
Český slovník kontroly pravopisu (bez diakritiky)
Slovník pro kontrolu pravopisu u textů bez diakritiky pro aplikace Mozilla
Copy Sent to Current
Allows to place a copy of sent messages (aka FCC) into the currently active folder or any other folder you choose, when you create the message. Usually the copies are placed into the 'Sent' folder. For replies, you may also move the original message.
To create your own collections, you must have a Mozilla Add-ons account.
