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GreatHorn vs Zix

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GreatHornEmail Security
ZixEmail Security
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Email Security

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Email Security

Overview
Focus
Email Security
Email Security
Product
Cloud-native email security for Microsoft 365 and Google Workspace using relationship analytics to stop spear phishing and BEC.
Email security platform providing encryption, DLP, and threat protection for regulated industries.
Headquarters
Waltham, Massachusetts
Dallas, Texas
Company size
51-200 employees
501-1,000 employees
Founded
2015
1998
Pricing details
Source updated
Oct 29, 2026
Oct 29, 2026

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Email Security