Free Domain Reputation Check

Check a domain against public reputation sources, understand each result, and connect it to the sending IP and message evidence that determine deliverability.

What is a domain reputation?

Domain reputation is a measure of the trustworthiness and credibility of a domain based on its sending behavior and overall online activity. Email providers and spam filters use domain reputation to determine whether emails from a specific domain should be delivered to the inbox, sent to the spam folder, or blocked entirely. Factors that influence domain reputation include spam complaint rates, bounce rates, engagement levels (like opens and clicks), and the presence of proper email authentication protocols (SPF, DKIM, and DMARC). Even if you use different IP addresses, your domain reputation follows you, making it crucial to maintain good sending practices. A strong domain reputation ensures better email deliverability and helps build trust with both email providers and recipients.

How to read your domain reputation result

ResultWhat it meansWhat to do
CleanThe public sources checked returned no current domain detections.Confirm the actual outbound IP, authentication, and a real message before treating the delivery incident as resolved.
One or more detectionsAt least one public reputation source associates the submitted domain with a listing or risk signal.Open the source evidence, confirm it applies to your domain, fix the underlying sending or compromise issue, then follow that operator's review process.
UnavailableA source could not be queried or did not return a reliable answer from the current resolver.Treat it as unknown, not clean. Use the linked operator lookup or check again from an approved resolver.

Run the check with the incident context

Submit the visible From domain, then preserve the campaign or message path, send time, provider, and reported symptom. A domain check is most useful when it is tied to a specific delivery event. If the problem is a rejection or spam placement, inspect the original message headers or bounce to identify the actual outbound IP and authentication identities.

A clean domain result is not an inbox guarantee

Public domain sources are one evidence layer. Mailbox providers also maintain private reputation, complaint, engagement, and recipient-specific signals that this checker cannot access. A website host's IP may also be unrelated to the system sending email. Check the confirmed outbound address with the IP reputation tool and send a representative message through the email deliverability test.

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