Waterfall Enrichment for Reach, Built in Clay

Load the list and set the guard rails

Import contacts from your CRM sync or a CSV. Before any enrichment, add a qualification formula so you never spend credits on rows you would not contact anyway:

Return true only if Employee Count is between 50 and 5000, Country is in
(US, CA, UK, DE, FR, AU), and Title contains any of: revenue, sales,
marketing, growth, operations. Otherwise return false.

Set every enrichment column to Only run if this gate is true. This one setting typically cuts credit spend 30 to 50 percent.

Build the email waterfall, cheapest first

Add a column with Enrich Data → Work Email → Waterfall. Clay presents the provider menu with per-hit credit prices; order yours cheapest to most expensive. A typical 2026 chain:

• Apollo (2 to 3 credits) → Prospeo (3) → LeadMagic (3 to 4) → Findymail (4)
• Each step runs only if the previous returned nothing, and misses are not charged.

Start with two providers, measure the marginal hit rate of each addition for a week, and only then add a third and fourth. The most common Clay budget blowup is turning on a five-provider waterfall on day one.

Verify before you trust

Add a verification column (BounceBan or ZeroBounce through the marketplace) that runs on any found email. Then add a formula column Sendable Email:

If Verification Status is "valid" return the email.
If "catch-all" return the email only if the winning provider was Findymail
or Prospeo (their catch-all accuracy is higher). Otherwise return blank.

Only Sendable Email ever writes to the CRM or reaches a sequencer. This is the difference between 85 to 92 percent coverage and a burned sending domain.

Add the phone waterfall where it pays

Direct dials cost 10 to 40 credits per hit from premium providers, so gate them harder: run phone enrichment only where Title seniority is Director or above AND account tier is 1 or 2. The same waterfall pattern applies; the gate is just stricter because the credits are 10x.

Write back and record the receipts

Use Write to CRM to update the Contact with Sendable Email, phone, and an Enriched At timestamp. Add columns capturing the winning provider and credits spent per row; your coverage dashboard groups on them.

Gate passes:            ~700 of 1,000 rows
Email waterfall:        ~4-8 credits average per found email
Found emails:           ~600 (85-92% of gated rows)
Verification:           ~1 credit per found email
Total:                  roughly 3,500-6,000 credits per 1,000 raw contacts
At Growth-plan rates:   roughly $70-180 per 1,000, before phones

Schedule the refresh

B2B data decays 2 to 3 percent a month. Add a view of CRM contacts where Enriched At is older than 180 days AND account has open pipeline or fits current ICP, and run the waterfall on that view monthly. Refresh selectively; re-enriching everything is how credits vanish.