What Is DMARC?
DMARC, which stands for “Domain-based Message Authentication, Reporting & Conformance”, and is an email authentication, policy, and reporting protocol.
DMARC is a way to make it easier for email senders and receivers to determine whether or not a given message is legitimately from the sender, and what to do if it isn’t. This makes it easier to identify spam and phishing messages, and keep them out of peoples’ inboxes.
Per DMARC lists and policies, free-emails like Yahoo, AOL, Microsoft, and Gmail (to name a few free email servers), are on the “Cannot Use” list. This means they can not be used as your “From Email” when creating and sending emails inside of Sendlane. Otherwise, the emails will be rejected when sent. This is because the email is coming from Sendlane rather than the free-email server.
For more information, please visit the official DMARC website.