Signals and data

Waterfall enrichment

Definition

Waterfall enrichment queries several data providers in sequence and stops at the first one that returns a valid result, raising coverage without paying every provider.

Waterfall enrichment in practice

No single provider has everyone. One is strong on US tech, another on Europe, another on mobile numbers. A waterfall tries provider A, and only if A comes back empty or unverified does it try B, then C. You pay for the lookups that run, so the order matters: put the cheapest provider with good coverage for your market first.

The step teams skip is verification inside the waterfall. A provider returning an email is not the same as the email being deliverable. IV builds waterfalls in Clay that keep running until the contact is verified, not just found, which is what makes cost per verified contact a real number.

Direct connections. Open the full map

Last updated 2026-10-14 by Ishan Vats.

Connected to

Part of

EnrichmentEnrichment is adding missing data to a record, such as a work email, phone number, job title or company size, by looking it up in external sources.

Depends on

Measured by

Cost per verified contactCost per verified contact is the total data and enrichment spend divided by the number of contacts with a verified, deliverable email or phone number.

See where waterfall enrichment fits in a real build.

Book the free 30 minute signal audit. We map the buying signals for your ICP live on the call, and show you where waterfall enrichment sits in the system we would build.

Pick a time in the calendar below to schedule a 30 minute call with me.

01You talk. Who you sell to and what you send today.
02We map. The signals that fire for your ICP and the two to start with.
03You keep it. The signal map and a budget range, whether or not you build with us.

Ishan Vats, founder of IV Consulting. We run our own outbound on the same system.

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