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Egress vs GreatHorn

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EgressEmail Security
GreatHornEmail Security
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Email Security

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Email Security

Overview
Focus
Email Security
Email Security
Product
KnowBe4-acquired intelligent email security platform preventing inbound phishing attacks and outbound data breaches with adaptive machine learning.
Cloud-native email security for Microsoft 365 and Google Workspace using relationship analytics to stop spear phishing and BEC.
Headquarters
London, United Kingdom
Waltham, Massachusetts
Company size
201-500 employees
51-200 employees
Founded
2007
2015
Pricing details
Free options
Free trial
Source updated
Oct 29, 2026
Oct 29, 2026

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Email Security