Email deliverability checker
See whether public SPF, DKIM, DMARC and MX records are present. This is a DNS completeness check — not a guarantee that mail will land in the inbox.
Gmail and Yahoo have strengthened authentication requirements, especially for bulk senders. SPF or DKIM is expected broadly, while bulk senders are generally required to use SPF, DKIM and DMARC. How we calculate this.
More free tools: DNS checker · WHOIS lookup · SSL checker.
SPF · DKIM · DMARC
The three records that prove your mail is genuine — checked and scored in seconds.
MX & mail routing
Confirms your domain can receive email and where it's routed.
Plain-English fixes
Not just a pass/fail — clear next steps to stay out of the spam folder.
Email deliverability FAQ
Why does my email land in spam?
The most common cause is missing or misconfigured email authentication — SPF, DKIM and DMARC. Without them, providers like Gmail and Outlook can't verify your mail is really from you, so they filter it. This tool shows exactly which records are missing.
What are SPF, DKIM and DMARC?
SPF lists which servers may send email for your domain. DKIM adds a cryptographic signature that proves a message wasn't tampered with. DMARC tells receivers what to do when a message fails SPF/DKIM, and can send you reports. Together they're the modern standard for inbox delivery.
Do I need all three?
Gmail and Yahoo have strengthened authentication requirements, especially for bulk senders. SPF or DKIM is expected broadly, while bulk senders are generally required to use SPF, DKIM and DMARC.
How do I fix these on my domain?
They're DNS TXT records. On PK Hosting you can add them from your dashboard's DNS manager, and our team will set up SPF/DKIM/DMARC for you on request — email on our platform is authenticated out of the box.