Messaging Security For Today's Threats

Message from the CEO

We are excited to report that Proofpoint closed its acquisition of Cloudmark on November 21st, 2017 so we are now operating as a Proofpoint company. Proofpoint, the world leader in protecting corporate email, brings unique strengths to the table for our customers and we foresee the integration of technology components that will significantly improve the solutions that we bring to our customer base. Specifically, we will look to leverage Proofpoint’s Nexus platform to increase accuracy and efficacy of our security solutions. The entire Cloudmark team is extremely excited to have joined Proofpoint as each company’s respective goals were already very closely aligned: Building the world’s most advanced messaging security solutions for today’s leading enterprises and communications providers.

Cloudmark now operates within Proofpoint as a wholly-owned subsidiary and will continue to focus on providing our products and services to internet service providers, hosting providers, mobile network operators, and communications platforms as a service (CPaaS) providers. Please click here to view the full Proofpoint acquisition announcement press release.

Warmest regards,

Jason Donahue
General Manager, Cloudmark
Proofpoint, Inc.

Service Providers

Cloudmark is a trusted leader in messaging security that protects 1 in 8 of the world's mailboxes. With a 14-year track record, we are the vendor of choice for spam and malware protection among leading ISPs and mobile providers around the world.


Using the world's largest database of messaging threat intelligence, Cloudmark provides innovative solutions that protect your organization's most important resources. We protect your business from unwanted spam, phishing and malware.

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Only Cloudmark Provides...

Global Threat Network

  • Largest database of its kind
  • Input from 100+ Tier 1 service providers
  • Protects 1 in 8 of the world's inboxes

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  • Stops attacks in real time
  • Protects against a broad range of threats
  • Automated, proprietary attack analysis

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  • Infrastructure agnostic
  • Software or virtual machine image
  • Up and running in hours
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