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About Proofpoint

  • Paul Buttle

    Paul Buttle

    Senior Vice President, Worldwide Sales

    As Senior Vice President of Worldwide Sales at Cloudmark, Paul Buttle is responsible for leading the strategic direction and execution of global sales. During his tenure, he has successfully increased new business, lead new sales initiatives, opened new channels and executed customer relationships outside of the Americas. He also previously served as Cloudmark’s Vice President of International Sales and Global Services, as well as Vice President of EMEA Sales.

    Paul has over 16 years of International sales experience selling complex software solutions with robust value propositions to mobile network operators, telecommunications organizations, internet service providers, media and cable operators across EMEA and Asia.

    Prior to joining Cloudmark in 2011, Paul achieved success working in several senior sales management positions at Bytemobile, British Telecom and Motorola, as well as a number of software startups. Paul holds a BA Hons Marketing.

  • Lori Cho

    Vice President, Operations

    As Vice President of Operations, Lori Cho oversees the entire IT and Operations Infrastructure and Architecture teams at Cloudmark. These teams manage the entire infrastructure for all customer-facing services spanning on-premises, and cloud technologies and platforms.

    Prior to joining Cloudmark in 2004 as a junior Systems Programmer, Lori held various positions at technology companies such as Sun Microsystems. With over 18 years of experience in technology, Lori is an active member in Anita Borg's Systers, the world's largest email community of women in technical roles in computing.

    She has a Bachelor of Science in Computer Science from Whitworth College.

  • Angela Knox

    Angela Knox

    Senior Vice President, Engineering

    Angela Knox is Senior Vice President of Engineering at Cloudmark, where she oversees the research and development of Cloudmark's content filtering technology, sender reputation services and threat intelligence data systems.

    Prior to joining Cloudmark in 2005, she was a senior software engineer at Critical Path. With over 16 years of experience in Internet messaging and security, Angela was listed as one of the five females leading the way in cyber security. She has presented at numerous events and currently sits on M3AAWG's Board of Directors representing Cloudmark.

    Angela has a BCom/BSc in information systems and computer science from the University of Auckland and an MBA from New York University's Stern School of Business.

  • Mike Reading

    Mike Reading

    Senior Vice President, Support and Technical Services

    As Senior Vice President of Support and Technical Services, Mike Reading leads the field technical teams that are responsible for customer presales, professional services, technical account management and support.

    Mike has over 15 years of experience delivering messaging and messaging security solutions to service providers, mobile operators and fortune 500 companies. While at Cloudmark, Mike was part of the initial team of solutions architects that lead Cloudmark’s evolution from a company primarily focused on consumer and desktop applications to a company positioned to solve messaging security problems for some of the world’s largest service providers. Mike has led the development of the company’s anti-abuse policy best practices and sender reputation strategies, and helped Cloudmark establish and maintain market leadership across the Americas and around the world.

    Prior to Cloudmark, Mike was at Openwave ( where he was responsible for bringing carrier-scale ISP and mobile messaging solutions to its worldwide customers. He helped lead the strategy to expand Openwave’s offerings into messaging anti-abuse solutions, which lead to the development of several anti-abuse products and an eventual partnership between Openwave and Cloudmark.

    Mike holds a master’s degree in mechanical and computer-aided engineering from Cornell University. Mike has been part of M3AAWG since its inception and is currently on the M3AAWG board.

  • Kevin San Diego

    Kevin San Diego

    Vice President, Product Management

    Kevin San Diego is the Vice President of Product Management at Cloudmark and currently leads the software and service planning efforts for the company's suite of products. Prior to joining Cloudmark in 2007, Kevin was a product manager at Symantec managing the various messaging security appliance and software anti-virus products.

    Prior to Symantec, Kevin worked directly with service provider customers at Brightmail on carrier grade spam and virus filtering solutions.

    He started his career in the messaging industry at Critical Path, one of the first hosted email service providers. As a 17-year messaging industry veteran, Kevin also participates in numerous speaking engagements and remains an active member of multiple industry working groups, including M3AAWG and APWG.

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