
Apollo.io offers Waterfall Enrichment
Waterfall Enrichment fills missing contact and company data by checking Apollo data first, then 20+ partner sources in sequence.
- Currently Offered

Waterfall Enrichment fills missing contact and company data by checking Apollo data first, then 20+ partner sources in sequence.
Waterfall Enrichment combines Apollo data on 240M+ contacts and 30M+ companies with 20+ partner sources to complete records with emails, phone numbers, and company fields without leaving Apollo. Users choose the sources and their order, or bring their own vendor. Enriched records flow into workflows, sequences, dialing, CRM sync, or the API.
Built-in email and phone validation is designed to reduce bounces and improve deliverability and connect rates. The offering sits in Apollo's data layer alongside first-party data unification, intent signals, and visitor identification.


Clay Waterfall Enrichment is Clay's multi-provider enrichment capability that queries data sources in sequence to maximize contact and account coverage.


Cognism CRM Enrichment keeps customer relationship management records complete with verified B2B contact and company data.


FullEnrich Waterfall Enrichment is the company's core lookup engine, sequencing 20-plus B2B data providers per record until a valid match.


Lusha Data provides verified B2B contact and company data with buying signals for go-to-market teams.


Waterfall Enrichment sequentially enriches CRM records from multiple data sources to improve contact and company data coverage.
Clay Waterfall Enrichment is Clay's multi-provider enrichment capability that queries data sources in sequence to maximize contact and account coverage.

Cognism CRM Enrichment keeps customer relationship management records complete with verified B2B contact and company data.

FullEnrich Waterfall Enrichment is the company's core lookup engine, sequencing 20-plus B2B data providers per record until a valid match.

Lusha Data provides verified B2B contact and company data with buying signals for go-to-market teams.

Waterfall Enrichment sequentially enriches CRM records from multiple data sources to improve contact and company data coverage.



FullEnrich Data Infrastructure for AI Agents embeds the company's waterfall enrichment engine into third-party products through one API.


Nooks Contact Data Enrichment supplies verified emails, mobile numbers, and waterfall-enriched contact records inside the Nooks sales platform.


Real-time B2B data enrichment that completes and corrects company and contact records in go-to-market systems.


FullEnrich Integrations connects the company's contact-data enrichment engine to agent, no-code, and CRM platforms.


UpLead Data Enrichment appends verified emails, phone numbers, and company details to contact lists a team already owns.


Dropcontact's API and MCP server expose its email finding and enrichment to external applications, automation platforms, and AI agents.


Landbase Enrichment fills and verifies B2B contact records using waterfall enrichment across data providers.


CRM Enrich is Seamless.AI's data-enrichment offering that keeps contact and company records in the CRM current.


Salesfinity SmartEnrich is the contact data enrichment product that waterfall-qualifies phone numbers and validates them at dial time.


CRM Enrichment is ZoomInfo's solution for filling and updating CRM contact and account records with verified B2B data.


Clay's inbound offering automatically enriches every inbound form-sourced lead and routes the completed record to the CRM.


Dropcontact CRM enrichment updates, cleans, and deduplicates contact and company records inside HubSpot and Pipedrive.


Programmatic people and company data access for customer systems and integrations.


Orange Slice's AI Data Enrichment Agent turns natural-language prompts into live-web research columns returning verified emails and phone numbers.


PoweredBy Demandbase embeds its B2B account, contact and intent data into partner platforms through APIs.
FullEnrich Data Infrastructure for AI Agents embeds the company's waterfall enrichment engine into third-party products through one API.

Nooks Contact Data Enrichment supplies verified emails, mobile numbers, and waterfall-enriched contact records inside the Nooks sales platform.

Real-time B2B data enrichment that completes and corrects company and contact records in go-to-market systems.

FullEnrich Integrations connects the company's contact-data enrichment engine to agent, no-code, and CRM platforms.

UpLead Data Enrichment appends verified emails, phone numbers, and company details to contact lists a team already owns.

Dropcontact's API and MCP server expose its email finding and enrichment to external applications, automation platforms, and AI agents.

Landbase Enrichment fills and verifies B2B contact records using waterfall enrichment across data providers.

CRM Enrich is Seamless.AI's data-enrichment offering that keeps contact and company records in the CRM current.

Salesfinity SmartEnrich is the contact data enrichment product that waterfall-qualifies phone numbers and validates them at dial time.

CRM Enrichment is ZoomInfo's solution for filling and updating CRM contact and account records with verified B2B data.

Clay's inbound offering automatically enriches every inbound form-sourced lead and routes the completed record to the CRM.

Dropcontact CRM enrichment updates, cleans, and deduplicates contact and company records inside HubSpot and Pipedrive.

Programmatic people and company data access for customer systems and integrations.

Orange Slice's AI Data Enrichment Agent turns natural-language prompts into live-web research columns returning verified emails and phone numbers.

PoweredBy Demandbase embeds its B2B account, contact and intent data into partner platforms through APIs.


Workflow Engine

Apollo Search

Apollo for Developers

Apollo Outreach

Apollo Meetings

Email Deliverability Suite

Apollo Dialer

Apollo MCP

Website Visitor Identification

Apollo Workspace

Apollo GTM Platform

Apollo AI

Apollo Data

Sales Coaching

Apollo Analytics

Sales Call Recording

Lead Scoring & Signals

Apollo Conversations

Apollo Deal Management