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Email Security Platforms
Overview
Focus
Email Security Platforms
Email Security
Product
HIPAA-compliant email encryption and anti-phishing platform protecting healthcare organizations and their patient data.
Tessian provides AI-powered email security that prevents accidental data loss, phishing attacks, and misdirected emails by understanding human communication patterns.
Headquarters
San Francisco, California
London, United Kingdom
Company size
51-200 employees
201-500 employees
Founded
2015
2013
Pricing details
Free options
Free plan, Free trial
Source updated
Oct 29, 2026
Oct 29, 2026