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, SmarterMSP, and BlockTelegraph.
Posts by Michael
What are TSS04 errors and how do I fix them?
Read article
Do subdomains need their own DMARC records if the main domain has one?
Read article
Why are Bigpond emails bouncing with a content-based spam reason?
Read article
How to resolve email blocking issues with Optimum/Optonline/Altice/Synchronoss?
Read article
Why does the Outlook app display the URL behind href links in the email content?
Read article
Is implementing a list-unsubscribe header mandatory for Gmail and Yahoo and what are the impacts?
Read article
What causes Gmail DKIM domain rate limiting errors and how are they related to SPF?
Read article
When are separate SPF records needed for a domain and its subdomains?
Read article
Should Shopify checkout opt-in boxes for email marketing be pre-checked for GDPR and deliverability?
Read article
Why are email clicks, conversions and unsubscribes declining despite high deliverability?
Read article
How do I set up BIMI? Is a VMC certificate always required?
Read article
How can I prevent bots from signing up for my newsletter and marking it as spam?
Read article

