DKIM

September 28, 2026 | 20 min

Why Your Invoices Go to Spam: SPF, DKIM and DMARC for a Hong Kong Retail Brand

For the ecommerce or operations manager at a Hong Kong consumer brand whose order confirmations and invoices stopped arriving after switching to a new third-party support platform. What SPF, DKIM and DMARC actually check, why alignment — not just having the records — is what determines delivery, the two correct ways to authorise a third-party sender, how to read a DMARC aggregate report without a tool, and the staged path from a monitoring-only policy to full enforcement.