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Major European payment processor can't send email to Google Workspace users

by Ian Atha atha.io published 2026-02-12

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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Networking & InternetSecurity & Privacy2026

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Feb 12, 2026Major European payment processor can't send email to Google Workspace users by thatha7777609415

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