← Glossary
Email Authentication
Technical standards (SPF, DKIM, DMARC) proving your emails are legitimate.
Email authentication is the combination of SPF, DKIM, and DMARC records that prove to receiving mail servers your emails are legitimately sent from your domain. Without authentication, emails are more likely to land in spam regardless of content quality. Gmail and Yahoo now require authentication for senders delivering 5,000+ messages daily. All creators should authenticate from day one — setup takes 15 minutes with ESP-provided DNS records.