Custom DKIM selectors
Paste up to 300 domains or email addresses, one per line. Useful for checking every sending domain in a Smartlead or Instantly setup at once.
| Domain | Score | Provider | SPF | DKIM | DMARC | Critical issues |
|---|
What gets checked
MXCan the domain receive replies? Which provider is it on?
SPFOne record only, under the 10-lookup limit (counted recursively), a sane
~all/-all, and your mail provider included.DKIMProbes 30+ common selectors (Google, Microsoft, SendGrid, Mailgun, Zoho…), estimates key size, and spots wildcard and revoked keys.
DMARCPolicy, pct, reporting address and inheritance from the parent domain, checked against the Gmail and Yahoo 2024 bulk-sender rules.
ExtrasMTA-STS, TLS-RPT and BIMI.
PrivateRuns in your browser using DNS-over-HTTPS (Cloudflare). No server, no logging.