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GreatHorn is a cloud-native, email security platform protects Office 365 and G Suite customers from both sophisticated phishing and traditional malware threats before, during, and after an email attack. In addition to preventing threats from reaching users, we also protect users at every other vulnerability point – giving context to help them make better decisions.

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  • Contact Information

    260 Charles Street Ste 300 Waltham Massachusetts 02453 United States
    Tel:  +1 617-877-3209

Company Case Studies

  • Hersha Hospitality Management (HHM)

    Hersha Hospitality Management (HHM), part of the Hersha Group, is a 5,000-person industry- leading hotel management firm that provides turnkey managem...

Press Releases

  • GreatHorn Awarded US Patent for New...

    01 May 2019

    GreatHorn, provider of the industry’s most advanced email threat protection platform, today announced that the United States Patent and Trademark Offi...

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