Waterfall Enrichment

Waterfall enrichment is a data strategy that queries multiple data providers in sequence until it finds the best available information for a given record. Instead of relying on a single database (which inevitably has blind spots), it cascades through 15+ sources to maximize coverage and accuracy. Each provider's response is validated for freshness and deliverability before being accepted. The result is a single golden record with higher match rates and fewer gaps than any individual provider can deliver.

Single-source enrichment queries one provider and returns whatever they have, with no cross-validation. Waterfall enrichment queries multiple providers sequentially, combining the best data from each source. It uses field-level optimization to select the highest-confidence data point for each field (email, phone, title, company) across all providers. It also validates data across sources, catching stale emails and outdated job titles that a single source would miss.

Cleanlist queries 15+ premium data providers including Wiza, Findymail, Prospeo, Hunter, and more. Our proprietary algorithm selects the optimal provider order based on data type, geography, and historical accuracy for each lookup. Each response is validated in real time before inclusion in the final golden record. The provider cascade is continuously tuned based on performance metrics, so the system gets more accurate over time.

Cleanlist uses simple credit-based pricing: 1 credit for email-only enrichment (partial), 10 credits for phone number enrichment, and 11 credits for full contact enrichment (email + phone + company data). Plans start at $0/month with 30 free credits included. There are no hidden fees, no setup costs, and unused credits roll over for up to 3 months. You only pay when data is found. Failed lookups don't consume credits.

Yes. Cleanlist integrates natively with Salesforce, HubSpot, Pipedrive, Outreach, Salesloft, and lemlist. You can also use the REST API for custom integrations. Enriched data syncs back to your CRM with field-level mapping, so records are updated automatically without manual data entry.

We achieve 98% email deliverability on enriched records. Every email is triple-verified through syntax validation, DNS/MX record lookup, and SMTP handshake, including catch-all domain detection. Phone numbers are format-validated against international standards. Company data is cross-referenced across multiple sources for consistency. This verification happens in real time during the waterfall, so you never receive unverified data.

Cleanlist processes most single-contact enrichments in under 3 seconds. The waterfall queries providers in parallel where possible and in sequence where validation depends on prior results. For bulk enrichment, you can submit up to 250 contacts per API request, with results streaming back as each contact completes. For asynchronous jobs the API returns a workflow_id that you poll until the results are ready, so you can fire a request and collect the enriched records when they settle.

Yes. Cleanlist offers a phone_only enrichment type that returns direct-dial and mobile phone numbers without email lookup. This costs 10 credits per record and is designed for cold calling campaigns where you already have email addresses. You can also use the full enrichment type (11 credits) to get both email and phone in a single request, which is the most cost-efficient option when you need both channels.

Cleanlist's waterfall enrichment queries 15+ premium data providers per lookup, including leading B2B data vendors like Wiza, Findymail, Prospeo, and Hunter. The system selects the optimal provider order based on the data type you need (email, phone, firmographics), the contact's geography, and each provider's historical accuracy for similar lookups. This multi-source approach reaches contacts that any single provider would miss.

Yes, waterfall enrichment consistently outperforms single-source enrichment across every key metric. Single-source tools query one database and return whatever they have, capped by that one database and with no cross-validation. Waterfall enrichment queries multiple providers in sequence, delivering broader coverage, 98% email accuracy through triple verification, and significantly fresher data through real-time cross-referencing. The trade-off is slightly higher processing time (under 3 seconds vs sub-second), but the data quality improvement is transformative for outbound sales and ABM campaigns.

Cleanlist's waterfall enrichment achieves 98% email deliverability on enriched records. Accuracy is built into every step of the cascade: each provider response is validated through syntax checks, DNS/MX record lookup, and SMTP handshake verification, including catch-all domain detection. Phone numbers are format-validated against international standards. Because the waterfall cross-references data across multiple providers, it catches stale emails and outdated job titles that any single source would miss. The result is a verified golden record you can trust for outreach.