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Smarter Data. Stronger Connections. Better Results.

Our Lists Contain Your Future Clients

Our Services

Fill Your Funnel

What if the problem isn’t your offer, your messaging, or your sales team? What if the real issue is that you’re filling your funnel with the wrong people?
For 25+ years, we’ve helped marketers and entrepreneurs solve this exact problem. Not by working harder, but by working smarter—with data that’s verified, enhanced, and designed to deliver motivated buyers who are actually ready to engage.
How much time and money have you spent trying to convert leads that were never going to buy? What would change if your funnel was filled with people who were genuinely interested from the start?

About List57

For over 25 years, we’ve worked with thousands of marketers and entrepreneurs who came to us with the same frustrations: wasted ad spend on bad data, sales teams chasing dead leads, and the constant stress of not knowing if their lists are actually working.

We’ve seen firsthand what that does to businesses—and to the people running them. The sleepless nights wondering why campaigns aren’t converting. The pressure from leadership to show ROI. The frustration of watching competitors succeed while your data holds you back.

That’s why we don’t just sell lists. We solve the underlying problems that are quietly draining your resources and limiting your growth. How much more could you achieve if every contact in your database was verified, accurate, and genuinely interested in what you offer?

Data Enhancement and List Hygiene

What is Data Hygiene?

Commonly known as scrubbing or filtering, data hygiene is the process of cleaning dangerous or poorly converting contact information from a list. Now we can transform your dirty, polluted, lists into pristine pools of ongoing profitably, for many years to come.

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    Email Lists
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    Postal Lists
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    Phone Lists

For many companies, in-house data hygiene should be your FIRST, biggest problem to attack.

What Is Data Enhancement?

The goal of data enhancement is to make your data a more valuable asset. When you get more out of it, you can do more with it. By enhancing your data with geographic, demographic, psychographic, and firmographic data elements, you can realize benefits such as:

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    Gain Customer Insight
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    Increase Response
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    Better Targeting
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    Better Targeting

Call Center & Postal Costs Soaring

Too many undeliverable calls? We append lists with cell and landline numbers — including DNC-compliant contacts — for guaranteed connections.
Postal mail bouncing back 10–20%? Our advanced updating reduces waste and boosts ROI — spend $1, save $10.

Stop Wasting $ on Bad Data

USPS NCOA only covers 80% of movers. Our PCOA service uses multiple data sets to increase delivery accuracy by up to 20%, track movers up to 30 years, identify deceased contacts, and include 1.2M Canadians annually.

Enhance Your Lists

You may have hidden opportunities in your existing marketing lists. We help you reactivate and convert these contacts into ongoing, lifelong buyers. We can append any information about anyone using just a phone number or email address.

Maximize Lead Value

Appending seemingly small pieces of information can make your marketing much more powerful. Key identifiers for specific verticals help leverage campaigns and scripts that otherwise might fail. Ensure your lists are complete, accurate, and actionable for maximum results.

Our Lists, Leads and Databases

Get a Free Quote or Schedule a Call Today.