Free tool
Free blacklist checker
Check a domain or IP against major DNS blacklists used by mailbox providers.
Why it matters
What this record proves
A blacklisting on your domain or sending IP suppresses delivery across many providers at once, often silently.
- Check both the sending domain and the tracking domain.
- Look for the listing reason before requesting delisting.
- Pause sending on the affected identity while you remediate.
- Re-check weekly once you are sending at volume.
Large volume orders
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Most teams start self-serve in 15 minutes. If you're provisioning at high volume, a short call gets you negotiated pricing, a rollout schedule and domain strategy.