Email Security
Tessian
AI email security preventing phishing, data loss, and misdirected emails using behavioral intelligence.
Now redirects elsewhere · confirmed 2026-09-30
www.tessian.com now redirects to proofpoint.com, titled "Tessian is Now Proofpoint | Proofpoint US". This tool is left out of every ranking on this site. See what changed in September 2026.
What’s good
- Catches sophisticated phishing
- Low disruption
- Training built in
Where it falls down
- Email-only
- Requires Outlook/Gmail
Features
Phishing prevention
DLP
Misdirected email detection
User coaching
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