Check whether reputation damage may be blocking your mail.

Use this page to start a reputation check. A blacklist result is only one signal; provider filtering can happen without a public listing.

FreeNo cardBuilt for diagnosis

Sending domain or IP

Enter a domain or IP.

Get delisted.

We check the major blacklists, identify what actually caused the listing, and file the delisting requests on the lists that accept third-party submission. Reply within one business day.

A few ISP-internal lists only accept requests from the sending operator — we'll tell you which ones those are and exactly what to send.

Do not publish DNS records or suppress customer data solely from an automated result. Validate changes against your actual sending stack.

What this tool can and cannot tell you

Useful for

Fast initial diagnosis
Finding obvious configuration or content risk
Preparing a more focused technical review

Not proof of inbox placement

Mailbox providers use private reputation signals
Results vary by message, audience and infrastructure
A real placement test requires a controlled send

Need the answer mailbox providers do not publish?

Run the full inbox placement test across Gmail and Outlook, then receive fixes ranked by impact.

Open the placement test Talk to an expert