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Email deliverability

Technical

A comprehensive collection of questions and answers about email deliverability technical from email marketers, experts and technical documentation.

Why are Pardot and ExactTarget included in the same SPF record?

What are the best practices for Email Service Providers regarding HELO, rDNS, and SPF?

What are the reasons to avoid using SPF macros?

How to set up DMARC with multiple email senders for the same domain?

What is List-ID and how does it impact email deliverability and user experience?

Understanding X-Microsoft-Antispam-Mailbox-Delivery Header Values

How to format SPF TXT records, add domain includes, and avoid DNS size issues?

Are A records for return-path domains necessary for email deliverability or required by RFC standards?

Is it problematic to use the same DKIM domain and selector for multiple email campaigns, and why do validation tools sometimes show errors for valid DKIM records?

What are the key considerations and challenges for DMARC implementation?

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