Read 19 GreatHorn reviews and testimonials from customers, explore 11 case studies and customer success stories, and watch customer videos to see why companies chose GreatHorn as their Email Security Software
GreatHorn is a cybersecurity company that helps organizations detect and prevent spear phishing and credential theft attacks automatically. The first and most powerful solution for stopping business email compromise, domain imposter, and whaling attacks, GreatHorn is natively integrated into Google Apps and Office 365, deploys in 15 minutes, and requires no changes to your existing mail routing or email gateway.
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