Domain Reputation Checker for Safer Email Campaigns

Domain Reputation and Email Deliverability

Domain reputation is a key signal used by mailbox providers (Gmail, Outlook, Yahoo) when evaluating incoming emails. Before sending a campaign, checking the technical setup of a domain can help identify risks that affect inbox placement.

DNS configuration, MX records, SPF, DKIM, DMARC, and website activity all contribute to how trustworthy a domain appears. Weak or missing signals can lead to filtering, lower engagement, or reduced campaign performance. Learn how to fix high bounce rates →

What Hurts Domain Reputation

The most common causes of poor domain reputation:

• Missing SPF record — Inbox providers can't verify you're authorized to send from this domain
• No DKIM signature — Emails can't be authenticated as genuinely from your domain
• No DMARC policy — Providers have no instructions on how to handle authentication failures
• DNS blacklisting — Your IP or domain is listed on Spamhaus, SpamCop, or Barracuda blocklists
• Sending to invalid addresses — Hard bounces destroy your sender score. Validate your list first →
• Parked or inactive website — A domain with no active website looks suspicious to spam filters
• Spam complaints — Recipients marking your emails as spam. Check your spam score →

From Domain Checks to Full Outreach Workflow

Domain reputation is just one piece of the deliverability puzzle. For maximum inbox placement, you need a complete workflow:

• Step 1: Check your domain reputation (this tool)
• Step 2: Validate your email list — remove invalid, catch-all, and disposable addresses
• Step 3: Check your spam score — fix content triggers before sending
• Step 4: Handle catch-all domains — segment risky addresses into separate campaigns
• Step 5: Warm up new domains gradually and monitor bounce rates