Email is tough: Major European Payment Processor’s Emails rejected by GWorkspace

AuthorsNameIan AthaTwitter@IanAthaTL;DR: Viva.com, one of Europe’s largest payment processors, sends verification emails without a Message-ID header — a basic requirement of RFC 5322 since 2008. Google Workspace rejects them outright. Their support team’s response to my detailed bug report: “your account has a verified email, so there’s no problem.”A few days ago, I tried to create an account on viva.com, one of Europe’s largest payment processors. It should have taken five minutes. Instead, it turned into a small investigation — and left me with some bigger questions about the state of European fintech infrastructure.The verification email that never arrivedThe signup flow is standard: enter your email, receive a verification link, click it, move on with your life. Except the…

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