Waterfall Enrichment

Find verified emails by running sources in sequence and stopping at the first verified result. The point of a waterfall is not coverage alone — it is coverage at a known cost per contact. A cascade without prices is a list of vendor names.

Two entry points, two different cascades

Which one you are in decides everything downstream.

Entry A — you have name + company domain. The normal case. Email finders take exactly this.

Entry A2 — you have domains and no people yet. Find the people first, then run the email cascade on whatever comes back without a verified address. See the next section.