Authentication
Domain verification guide
Find help with the records used to authenticate your sending domain.
What you’ll find in this section
If a campaign does not behave as expected, start with the evidence: the domain verification status, any bounce message and the way the email displays in the affected mail application.
These resources explain common sending and display issues. Delivery depends on several factors, so domain verification alone cannot guarantee inbox placement.
Helpful resources to get you started
Explore our existing guides and software information. We’ll add new articles to this section as the knowledge base grows.
Troubleshooting
Bounces explained
Understand the difference between bounce types and what to investigate next.
Email display
Email browser compatibility
Explore why email layouts can behave differently across mail applications.