Email · Instant result
SPF / DKIM / DMARC
Check whether your domain publishes the DNS records that stop spoofing and improve inbox delivery.
What it’s for
For anyone sending mail from a custom domain. Missing or weak SPF/DKIM/DMARC is a common reason messages land in spam or get forged.
How it works
We look up SPF and DMARC TXT records and try your DKIM selector (default, or the one you enter — e.g. google, selector1). Then we flag dangerous policies like +all or p=none.
What you get
Pass/fail style findings with the exact records we found and concrete fix suggestions.
We look at
- SPF TXT
- DMARC (_dmarc)
- DKIM selector
- Policy strength
How to use
- 1 Enter the domain that appears after @ in From.
- 2 Optionally set the DKIM selector used by your ESP.
- 3 Fix critical items first, then tighten DMARC over time.