Will Messina

Will Messina is the co-founder and CEO of GrailPay, a New York-based fintech building the risk and intelligence layer for bank payments. He started the company as a broke college kid at Boston College who wanted people to pay straight from their bank accounts, then pivoted from a consumer idea into the unglamorous plumbing of ACH: fraud detection, account verification, and settlement certainty. In June 2026 GrailPay raised a $10.5M Series A led by MissionOG to scale its Payments Identity Network, which covers over 99% of US bank accounts and aims to become the trust layer for instant and agentic B2B payments.