Major European Payment Processor Can't Send Email to Google Workspace Users
Hacker News
February 12, 2026
Viva.com, one of Europe's largest payment processors, sends verification emails without a Message-ID header — a 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.
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Originally published on Hacker News on 2/12/2026