Email deliverability checker
Find out why your emails go to spam. Check a domain's SPF, DKIM, DMARC, and MX records, with plain-language fixes.
Email providers like Gmail and Outlook check three records in your domain's DNS before trusting your messages. If any are missing or misconfigured, your emails are more likely to land in spam. This checker reads them and explains what to fix in plain language. Enter the part after the @ in your email address.
The three records that matter
- SPF lists the servers allowed to send email for your domain.
- DKIM adds a digital signature that proves a message really came from you and wasn't changed.
- DMARC tells receivers what to do when a message fails those checks, and where to send reports.
How to fix a missing record
You add these records in the DNS settings wherever your domain is managed, such as Cloudflare, Namecheap, or GoDaddy. Your email provider (Google Workspace, Microsoft 365, Zoho, and others) shows the exact SPF and DKIM values to use in its setup guide. For DMARC, a safe starting point is a TXT record named _dmarc with the value v=DMARC1; p=none; rua=mailto:you@yourdomain.com, which collects reports without affecting delivery. Once reports look clean, you can move to p=quarantine.
A note on DKIM
DKIM records live under a name called a selector, which each email provider chooses. We check the selectors used by the most common providers. If yours uses a different one, your DKIM may be set up correctly even if we can't find it; your provider's admin console confirms it.
Last updated October 2026.