Domain-based Message Authentication, Reporting & Conformance (DMARC) is a widely recognized email protocol that helps people and businesses protect their email addresses and domains from being misused by third parties. It helps identify that an email you send is from the real you. This method of email authentication protects both senders and recipients from activities like phishing, spamming, and spoofing.

The 3 Things To Avoid When Emailing Your List
When you decide to have an opt-in list, it is not just a matter of sending your subscribers your promotional newsletters or catalogs.