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GreatHorn, an email security platform provider, recently announced that it has closed a $13 million funding round jointly led by RRE Ventures and .406 Ventures along with the participation from the existing investors, including Techstars Ventures, V1.VC, and Uncork Capital. The American-based company stated the new investment will support its business expansion operations and help the company to continue its position as the innovation leader in the email security industry.

Founded in 2015, GreatHorn offers a security platform that safeguards cloud email from advanced threats such as individual and brand impersonations, credential theft attempts, malware, ransomware, and advanced social engineering-based phishing attacks. The company claims that its security products connect directly to Office 365 and G Suite without any need for DNS editing or existing email setups.

Speaking on the new investment Kevin O’Brien, the CEO of GreatHorn stated, “With a fast-growing customer base and track record of best-in-class detection and innovation for today’s cloud-based email platforms, GreatHorn has changed the way the industry talks about email security. As we continue to meet customer demand and drive the market, we remain fundamentally interested in redefining email as a secure system for all users, and ensuring that organizations who have adopted cloud email platforms are not relying on outdated perimeter controls or simple user education to protect their most critical assets.”

“RRE Ventures invests in passionate and tenacious teams that are building category-defining businesses,” said Raju Rishi, General Partner at RRE Ventures. “Despite decades of experience and billions of dollars spent, the email security industry is no closer to making email safe for businesses. By rethinking how we approach email security, GreatHorn has delivered a platform that comprehensively protects enterprises against the rising sophistication of today’s threats. We’re excited to support GreatHorn as the company continues to build upon its current innovation and grow in the enterprise space.”

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