Is your domain set up to land in the inbox?
Enter your sending domain and get an instant read on SPF, DKIM, DMARC, and MX, with plain-English fixes for anything that's off.
Free, no signup, runs in your browser
This checks the DNS foundation of deliverability in real time (lookups run from your browser via DNS-over-HTTPS). It cannot see your sender reputation, content quality, or actual inbox placement, and DKIM detection tries common selectors only, so a custom selector can show as a false alarm. Passing these checks is necessary, not sufficient. Our managed service also runs warmup and live inbox-placement tests against real mailboxes.
Common questions
What do SPF, DKIM, and DMARC actually do?
SPF lists which servers may send email for your domain. DKIM cryptographically signs your messages so receivers can verify they weren't forged or altered. DMARC tells receivers what to do when a message fails those checks and sends you reports about who is sending as you. Together they're the authentication baseline Gmail and Microsoft expect from senders.
The checker says DKIM wasn't found. Is that always a problem?
Not always. DKIM keys live at a selector name you choose, and this tool tries common ones (google, selector1, k1, and so on). If your provider uses a custom selector, your DKIM can be fine and still not show here. If you've never configured DKIM at all, though, treat it as real and fix it.
I pass all the checks but still land in spam. Why?
Authentication is the entry ticket, not the whole game. Sender reputation (built by volume patterns and engagement), list quality, and message content decide the rest. Warmed mailboxes, verified lists, and human-quality copy are the operational half that DNS can't show.
Is my domain sent anywhere when I use this?
The domain name you type is sent to Google Public DNS (dns.google) to resolve the records, the same way any DNS lookup works. Nothing is stored by us and there's no signup.
Want the whole motion handled for you?
These tools cover the checks. Revenue Force runs the entire outbound motion, in your voice, with your approval on every message, and books the conversations onto your calendar.