Help ensure your emails
hit the inbox
Stop guessing why your messages end up in spam. Follow this 26-point checklist to achieve technical compliance, enhanced sender reputation, and delivery success.
Authentication
#7
SPF
Sender Policy Framework (SPF) defines the authorized IP addresses, hosts, and services permitted to send email for a given domain. Each sending domain must have an accurate SPF record published in DNS.
A properly configured SPF record is critical for authentication, mitigating spoofing, and maintaining strong delivery reputation.
Related Tips
More from Authentication