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.

Combining Email Marketing with Other Types of Marketing
Whether you choose to do your marketing online or offline, one thing does not change. This is the concept that no single marketing strategy will be as effective as a combination of two or more marketing strategies.