Tadrill Alert: An add-in for easy reporting of targeted attack emails in Gmail™.
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Listing updated:July 8, 2025
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Overview
Tadrill Alert is an add-in for Gmail™, part of HENNGE K.K.'s targeted phishing training service, Tadrill. This add-in allows users to easily report targeted phishing emails into the Tadrill system. 

A Tadrill license is required for use. Please contact us for purchasing inquiries.
https://hennge.com/jp/service/tadrill/
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PricingFree of charge
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Tadrill Alert will ask for the permissions shown below. Learn more
Tadrill Alert will need access to your Google account
This will allow Tadrill Alert to :
View your email message metadata when the add-on is running
View your email messages when the add-on is running
Run as a Gmail add-on
Read, compose, and send emails from your Gmail account
Connect to an external service
View your country, language, and timezone
See your primary Google Account email address
See your personal info, including any personal info you've made publicly available
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