SPF, DKIM and DMARC for Transactional Email: A Practical Setup Checklist
Why your order confirmations land in spam, and the three DNS records that fix most of it. Your checkout works. The customer pays. Then the order confirmation lands in their spam folder, or never arrives at all. Since 2024, Gmail and Yahoo have required senders to authenticate their mail properly, and Microsoft has followed. If your app sends email (receipts, password resets, booking reminders), authentication is no longer optional. This guide walks through the three records that matter, in the…