Relevant Software
Filtrat vs Clay Waterfall vs Clearout — 301 leads.
Method: Clay waterfall side-by-side. 1,700+ emails found since.
“The waterfall finds more. Filtrat finds cleaner. We cancelled Clearout.”
“As Head of Sales, I’m grateful our team has access to a product like filtrat. It gives us confidence in our outbound data quality and saves us real money on verification costs. The accuracy we see from filtrat changed how we approach list building.”
Nelia MorozykHead of Sales, Relevant Software“Since the comparison test I’ve run 1,700+ email searches through filtrat via Clay. The process doesn’t break, doesn’t timeout, scales without babysitting. As head of data research that’s what actually matters — uninterrupted list building without paying for every waterfall output from 5 different providers.”
Pavlo FirmanHead of Data Research, Relevant SoftwareThe Setup
The data research team was paying for:
- A Clay waterfall with multiple email providers
- A Clearout subscription to double-check the waterfall’s results
The question: do we actually need Clearout, or can filtrat handle both finding and verification?
Test: run the same 301 leads through filtrat and the Clay waterfall, then verify both sets through Clearout as a neutral third party.
Who Found More?
What happened to the waterfall’s 287 “found” emails
Whose Emails Were Accurate?
Both sets verified by Clearout as neutral third party.
Filtrat’s 210 emails
96.2%
| Result | Count | % |
|---|---|---|
| Valid | 202 | 96.2% |
| Catch-all | 6 | 2.9% |
| Invalid | 2 | 1% |
Waterfall’s 249 emails
92.4%
| Result | Count | % |
|---|---|---|
| Valid | 230 | 92.4% |
| Catch-all | 17 | 6.8% |
| Invalid | 1 | 0.4% |
| Unknown | 1 | 0.4% |
Usable Emails Out of 301 Leads
The waterfall produces more usable emails overall. Filtrat produces fewer but higher-confidence results with zero domain mismatches.
What Happened Next
Key Numbers
Takeaway
The waterfall finds more emails. Filtrat finds cleaner ones — zero domain mismatches and higher validation accuracy. The accuracy advantage plus the cost savings made the decision straightforward: cancel Clearout, run filtrat as the primary verification layer, use Clay for orchestration.
1,700+ email searches later, the process hasn’t broken once.
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