DKIM Record Checker
DKIM cryptographically signs your mail; the public key is published in DNS at selector._domainkey.yourdomain. The catch is you need the selector your email provider uses.
How it works
Enter your domain and the DKIM selector (we suggest common ones like google, selector1, k1, default). We query selector._domainkey.yourdomain over DNS-over-HTTPS and confirm a v=DKIM1 record with a non-empty public key is present.
Authentication is step one.
Once your records check out, inbox placement still depends on reputation and warmup. Scheduler Zero handles both. Need to fix a record first? See the per-host setup guides.