Co-founder and CEO
Michael Ko
Michael Ko is co-founder and CEO of Suped, a platform dedicated to simplifying DMARC monitoring and enforcement. Prior to founding Suped, he built a track record leading large-scale technology teams and delivering complex solutions at prominent organizations like Amazon and Deloitte Digital.
His enterprise-grade technology experience now fuels his work on a critical and often overlooked area of cybersecurity. Michael advocates for making foundational security controls like DMARC accessible and manageable for organizations of all sizes, empowering them to protect their brand and their customers.
Michael is frequently cited in the press on email security, phishing, privacy compliance, and cybersecurity compliance, including Newsweek, Forbes Advisor, SmarterMSP, and BlockTelegraph.
Posts by Michael
Why are emails being marked as junk or phishing in Outlook 365?
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Why is Gmail rate limiting my marketing and transactional emails after a period of low sending volume?
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Why is DMARC failing for my subdomain, and how does the Public Suffix List affect DMARC alignment?
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Why is Yahoo blocking my email even with low complaints and dedicated IPs?
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Why are SPF, DKIM, and DMARC failing in Yahoo/AOL, and how to fix it?
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Why is my primary domain not compliant with Google one-click unsubscribe while the subdomain is?
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Why does Gmail show DKIM failing when it actually passes?
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Is it safe to email DNS records?
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How long does it take for DNS record changes to propagate?
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How to resolve email deliverability issues and 0% open rates in Protonmail inboxes?
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Why are Gmail OTP emails delayed and how can I fix it?
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Why does Gmail rewrite or change email subject lines for senders?
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