Free tool

Domain reputation checker for cold email

Check the public signals that can make a sending domain risky before a cold email launch: registration age, current blacklist status, authentication, mail routing, and HTTPS.

This checks observable domain reputation risk signals for one domain. For a real launch verdict, run every domain, inbox, and tracking domain through the full QA pass.

Runs live in your browser via public DNS. Nothing is stored.

Observable risk, not a private sender score

This checker does not pretend to know the private reputation scores used by Gmail, Microsoft, or other mailbox providers. It looks at the parts a launch team can verify before sending volume.

Use it to catch obvious reputation risk on one domain, then run the same checks across every sending domain, inbox, tracking domain, and SMTP egress path before client signoff.

Historical sender risk in the full report

The free checker focuses on observable public signals. In the app, OutboundQA can add history from its own monitoring runs, current blacklist checks, and optional IP abuse intelligence to show historical blacklist activity, reputation trend, and sender IP risk.

That matters because a sender can look clean today while a recent listing or IP abuse signal still explains why the launch should be slowed down, moved, or reviewed.

How to read the result

A pass means the observable reputation-risk checks did not find a blocker for this one domain. A warning means something needs review before launch. A fail means you should pause sending until the issue is fixed or explained.

What this check does not catch

A passing observable domain reputation risk signals lookup is useful, but it is not launch signoff. Cold email campaigns still fail when adjacent records, tracking domains, or inbox-level settings are broken.

private Gmail reputation

private Microsoft sender scores

sending history

list quality

message copy

inbox-level setup

Setup guides for this check

Read the setup notes behind this result, then verify the neighboring records before launch.

Email blacklists: check and delist

The RBLs that matter, how listings happen, how to check before launch, and the delisting process.

Domain warmup and safe sending volume

Why new domains are high risk, ramp schedules, per-inbox daily limits, and domain age.

Google and Yahoo bulk sender requirements

SPF, DKIM, DMARC, one-click unsubscribe, and the spam-rate thresholds bulk senders must meet.

Need to check a full outbound workspace?

OutboundQA checks every domain, inbox, and tracking domain in the workspace, then gives you a shareable report with a Ready, Needs Fix, or Do Not Launch verdict.

Cold email launch checks to run next

Use this result as one checkpoint in the launch flow. Then verify the neighboring records and run the combined domain check before the outbound launch goes live.

SPF Checker

Look up a domain's SPF record and count its DNS lookups against the limit of 10.

DMARC Checker

Look up a domain's DMARC record and read its policy in plain English.

DKIM Checker

Look up a domain's DKIM selector and confirm the public key exists.

Auth Checker

Run SPF, DKIM, and DMARC together for a sending domain before launch.

MX Checker

Look up a domain's MX records and detect the mail provider.

Blacklist Checker

Check a domain and sampled mail server IPs against domain and email blocklists.

Deliverability Checker

Check observable cold email infrastructure readiness across MX, SPF, DKIM, DMARC, blacklist, age, tracking-domain, and SMTP egress identity signals.

Domain Checker

Run MX, SPF, and DMARC in one pass for a quick readiness verdict on a sending domain.

Sample Launch QA Report

See the report founders, teams, and agencies can share after the full QA pass.

Email Deliverability Tool

See how one-off checks turn into pre-launch QA for full cold email workspaces.

Questions

No. Gmail, Microsoft, and other mailbox providers do not expose a universal public domain reputation number. This free checker reviews observable launch-risk signals instead: age, current blacklist status, authentication, MX, and HTTPS.

For cold email launch QA, domain reputation risk is the set of signals that can make a domain look unsafe before a campaign starts: very new registration, blacklist listings, missing authentication, broken mail routing, weak web presence, or recent sender-history issues.

No. A clean observable-risk result is useful evidence, but inbox placement also depends on sender history, mailbox configuration, volume ramp, list quality, message content, and recipient engagement.

Cold email recipients and filters often inspect the domain behind a sender or link. A domain with no working HTTPS site can create trust risk even if DNS authentication passes.