Free · Two checks · Plain English
Find out why your emails go to spam, in two minutes.
Step 1 checks your domain's SPF, DKIM and DMARC records. Step 2 gives you a one-time address: send it an email and see whether your real mail passes the checks Gmail and Outlook run.
Step 2: send a test email
Get a one-time address, send it any email from the account you're worried about, and see the real verdicts.
What the three records do
- SPF lists the servers allowed to send mail from your domain.
- DKIM adds a signature to each message, proving it wasn't altered and came from your domain's key.
- DMARC tells receivers what to do when the first two fail, and makes sure they match the address people see.
Since 2024, Gmail and Yahoo require all three for anyone sending in volume, and they weigh them for everyone else. Google: Email sender guidelines · checked Oct 2026
Questions
Why do my emails go to spam?
Usually one of three things: your domain's authentication records (SPF, DKIM, DMARC) are missing or wrong; a tool sends on your behalf without being authorised; or the content and sending pattern look like bulk mail. This page checks the first two in a minute.
What's the difference between the DNS check and the test email?
The DNS check reads your public records. The test email shows what actually happens when you send: which server sent it, whether it was signed, and whether Gmail-style checks pass. Both matter; the test email is the one that can't be fooled.
Do you keep the test email?
No. The service that receives it reads the authentication headers, stores the pass/fail results and the sending address, and discards the message. Results are kept 30 days.
I fixed the records. How long until it works?
DNS changes are usually visible within minutes, sometimes a few hours. Send another test email to confirm.
Want it fixed for you?
I set up SPF, DKIM and DMARC for your domain and your sending tools, then test from real inboxes. From $300. Tell me which email services you use.