DMARC, SPF & DKIM Checker
Check if your domain's email authentication is properly configured. Get an instant grade with plain-English recommendations.
What We Check
SPF (Sender Policy Framework)
SPF tells receiving servers which IP addresses are allowed to send email on behalf of your domain. Without it, anyone can send email pretending to be you.
DKIM (DomainKeys Identified Mail)
DKIM adds a digital signature to your emails that proves they haven't been tampered with in transit. It's like a wax seal for your emails.
DMARC (Domain-based Message Authentication)
DMARC tells receiving servers what to do when SPF or DKIM checks fail — reject, quarantine, or allow. It also enables reporting so you can monitor abuse.
MX Records
MX records tell the internet where to deliver email for your domain. Without them, nobody can send you email. We check that at least one is properly configured.
Why Email Authentication Matters
Properly configured email authentication improves deliverability, protects your brand, and prevents spoofing.
10-20%
higher inbox rate
Better Deliverability
Emails from authenticated domains are more likely to reach the inbox instead of spam. Gmail, Outlook, and Yahoo all check these records.
3.4B
spoofed emails daily
Brand Protection
Without DMARC, anyone can send emails that look like they're from your domain. Phishing attacks can destroy customer trust overnight.
2024
requirement deadline
Compliance Ready
Google and Yahoo now require SPF, DKIM, and DMARC for bulk senders. If you send more than 5,000 emails/day, these are mandatory.
Authentication Is Just the Start
MoreMail monitors your deliverability, checks blacklists, warms up your domain, and gives you tools to ensure every email reaches the inbox.
No credit card required • Free plan includes 1,000 subscribers