DNS Propagation Explained
DNS changes don't take effect immediately. Understand TTL, caching, and how to verify propagation has completed worldwide.
DNS & Domain Setup
SPF, DKIM, DMARC, BIMI, domain verification, MX records, Return-Path
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.
Custom Tracking Domain for Click URLs
Replace AcelleMail's default tracking domain with your own branded domain using a CNAME record and an SSL certificate.
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.