SPF, DKIM & DMARC Checker
Check whether your domain has email authentication properly configured. It's the first thing to look at when your campaigns land in spam.
The lookup runs from your browser via DNS-over-HTTPS, with backup resolvers (Google, Cloudflare, Quad9) if one fails. We don't store the domains you check. Not sure what to publish? Check the guide on how to authenticate your domain.
What it checks and why it matters
We query your domain's DNS records to confirm you have SPF (which servers can send on your behalf), DMARC (what to do with mail that fails authentication) and, if you provide the selector, DKIM (the signature that proves the email wasn't altered). Without these records, Gmail, Outlook and Yahoo distrust your campaigns.
Missing one?
If a record shows as "not found", follow the guide on how to authenticate your domain or the technical guides for SPF, DKIM and DMARC. arrobaMail walks you through it step by step from the dashboard.
Was this useful? Bring it into your real operation
Create your free account: full feature access, Amanda IA included, no credit card. Move from a standalone tool to a complete platform.
Free Plan · AI generations included · no credit card