Does Lewis generate leads?

No. It works a list you already own. If you need new leads, this is not the product.

Will it conflict with my marketing platform?

No. It reads a CSV export and writes nothing back into anything.

Can I use it for just the old leads?

That is the intended use. Export the cold half of the book and point it at that.

Comparison

One generates leads. One works the ones you already have.

Ylopo is a marketing stack: advertising, a search site, branding, and AI follow-up on top. Lewis is not in that business. It does the last part of that list and nothing else.

Try Lewis on a sample book All comparisons

These are not the same purchase

A marketing platform’s job is to put new leads in the top of your funnel and keep them warm. Lewis’s job is the four hundred names already sitting at the bottom of it, from campaigns you ran years ago.

If your problem is “not enough leads”, Lewis does not solve it and will not pretend to. If your problem is “I have paid for hundreds of leads and I have no idea which of them are real”, that is the one thing this is for.

Side by side

One row per thing an agent actually asks about.

How Lewis and A full marketing stack differ
	Lewis	A full marketing stack
Generates new leads	No	Yes, that is the core of it
Works a dormant list you already own	Yes, that is the whole product	Usually part of it
Runs your advertising	No	Yes
Gives you a search site	No	Yes
Approval model	Every draft held for your yes by default	Read the vendor’s own documentation
Setup	Import a CSV	A platform onboarding
What it refuses to say	Fair-housing language, unsourced property facts, unsourced travel times, mechanically, on every message	Varies
Priced by	Agent per month, flat	Read the vendor’s current pricing

Everything below about Lewis is checkable in this product. Everything about the other side is a description of the CATEGORY it belongs to, not a claim about its internals. For anything specific, and for current pricing, read their own documentation. If something here is out of date or unfair, tell us and it gets fixed.

The overlap is one row of that table

Both do AI follow-up. Everything else on a marketing platform is a product Lewis does not have, and everything Lewis is careful about is a smaller surface than a platform has to cover.

Which means the comparison is really: if you are already paying for a platform that follows up, do you need this? Sometimes not. The case for adding it is the dormant half of your database: the contacts that predate the platform, or were imported into it and never worked, or have had eleven automated touches and answered none.

What a narrow product can promise

A platform has to be reasonable across advertising, a website, a CRM and follow-up. A product that does one thing can make promises the platform cannot: nothing sends without your yes; a property fact is refused rather than approximated; a travel time comes from a routed provider or the sentence says so.

Those are not features anybody markets. They are what you want at 7am with eleven drafts in front of you.

Using both

Common, and sensible. Let the platform generate and the site convert; point Lewis at the export of everything that has gone cold. Lewis needs no integration and writes nothing back, so it cannot interfere with a campaign that is running.