Who uses ListLens

If you send email and care about where it lands

ListLens was built for the people who think about deliverability before they think about subject lines.

Deliverability consultant

Audit client lists before touching their sender reputation

Before you start working with a new client, you need to know what you're dealing with. A domain breakdown tells you if the list is healthy, where the risk is concentrated, and what needs fixing before a single email goes out.

  • Identify high-risk domains before onboarding a new client
  • Catch disposable and spam trap domains immediately
  • Give clients a visual breakdown they can actually understand

Email marketer

Diagnose a deliverability drop before your next send

Your open rates fell off a cliff and you're not sure why. Before you rebuild your template or change your subject lines, check your list. A domain breakdown shows you if the problem is your audience composition — too many free providers, disposable addresses, or a segment that's gone stale.

  • See your free vs corporate domain split instantly
  • Spot unusual domain concentrations before they tank metrics
  • Segment before sending — not after the damage is done

Cold outreach / sales

Make sure your prospect list is actually B2B before you burn your domain

You bought or built a list of "business contacts." But what percentage are actually corporate domains — and what percentage are Gmail, Yahoo, and Hotmail? Sending a B2B sequence to a list that's 60% free providers tanks your reply rates and your sender reputation at the same time.

  • See your corporate vs free provider split in seconds
  • Catch personal email addresses hiding in a B2B list
  • Protect your sending domain before the campaign starts

List broker / data vendor

Show buyers exactly what they're getting

When you sell email lists, buyers want to know what they're actually purchasing. A domain breakdown is the proof. It shows list composition, quality indicators, and gives buyers confidence in their purchase.

  • Provide transparency to list buyers
  • Differentiate your lists from competitors
  • Reduce buyer complaints and chargebacks

Experienced list bombing?

Detect domain anomalies and unusual patterns

If your list has been compromised or received spam signups, ListLens helps you identify domain anomalies and unusual patterns. Quickly detect if your list has been targeted by list bombing attacks or malicious actors.

  • Identify unusual domain clusters
  • Detect anomalous signup patterns
  • Protect your sender reputation from attacks
"Domain composition is the one thing most email marketers don't look at until it's too late."

MrDeliverability.com — Email Deliverability Expert

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