Free Tool

Free Sender Reputation Checker

Combines multiple signals into a single reputation assessment.

What This Tool Checks

This sender reputation checker evaluates your sending domain across the signals that email providers use to determine whether your emails reach the inbox. Rather than checking a single factor in isolation, it combines DNS authentication status, blacklist presence, domain age, and configuration quality into an overall email reputation check. The result gives you a snapshot of how email providers are likely to treat messages from your domain.

Sender reputation is the invisible score that controls your deliverability. Email providers like Gmail, Outlook, and Yahoo maintain internal ratings for every sending domain based on historical behavior. While those exact scores are not publicly available, this domain reputation lookup evaluates the publicly visible signals that feed into those ratings, giving you the best available proxy for how your domain is perceived.

What Gets Evaluated

DNS Authentication

The checker verifies whether your domain has valid SPF, DKIM, and DMARC records. Missing or misconfigured authentication is the most common cause of poor sender reputation. Each record is evaluated for correctness, not just presence. An SPF record with too many lookups or a DMARC record without a reporting address is technically present but not properly configured. Use the SPF Checker, DKIM Checker, and DMARC Checker for detailed analysis of each record.

Blacklist Status

The sender score check includes a scan against major blacklists. Being listed on Spamhaus, Barracuda, or SpamCop directly damages your reputation and causes immediate deliverability problems. The checker identifies any listings and their severity so you know which require urgent attention.

Domain Age and Configuration

Email providers consider domain age as a trust signal. Brand new domains have no history and are treated with caution. Domains that have been registered for months or years with consistent positive sending history are trusted more. The checker evaluates your domain age and overall configuration quality as contributing factors to the reputation assessment.

How to Use the Results

If your overall reputation score is low, start with the specific factors that are flagged. Fix DNS authentication issues first because they are the foundation everything else builds on. Address any blacklist listings next. If domain age is the issue, allow more time for warmup and gradually build sending history. Run the checker again after making fixes to confirm improvement.

For ongoing monitoring, check your reputation weekly or before launching new campaigns. Reputation can change quickly if a campaign generates bounces or complaints, and catching a decline early makes recovery faster.

Continuous Reputation Monitoring

Manual reputation checks depend on you remembering to run them. EmailQo includes automated reputation monitoring as part of its pre send inbox health checks. Before every campaign, the system validates DNS authentication, checks blacklists, and scans content. You send through your own Gmail, Outlook, Zoho, or Amazon SES accounts, so your reputation is isolated from other senders. Built in warmup on every plan builds and maintains the positive sending history that supports strong domain reputation over time.

Your emails deserve the inbox.

7 days free. No card. Cancel anytime.

Start free trial
No card needed
7 days free
Cancel anytime