How Email Delivery Actually Works
Follow a single email from your "Send" button to the recipient's inbox — covering MTA handoff, SMTP conversation, DNS MX lookup, and TLS negotiation.
Spf
6 articles tagged with "Spf"
Return-Path and Envelope Sender Explained
The Return-Path header controls where bounce notifications go. Learn how it differs from the From address and why alignment matters for DMARC.
Complete DNS Setup for Email Sending
All the DNS records you need to configure for proper email delivery: SPF, DKIM, DMARC, MX, and more.
DNS Propagation Explained
DNS changes don't take effect immediately. Understand TTL, caching, and how to verify propagation has completed worldwide.
How to Set Up SPF, DKIM, and DMARC Records
Complete guide to configuring email authentication DNS records for maximum deliverability.
BIMI Setup: Show Your Logo in Gmail
BIMI displays your brand logo next to emails in Gmail and Apple Mail. Learn the SVG requirements, VMC certificate, and the DNS TXT record format.