Overview

Waterfall is a B2B data enrichment platform that aggregates 30+ data vendors to provide comprehensive and up-to-date contact information. By utilizing a waterfall enrichment method, it optimizes data coverage and reduces costs, enabling businesses to expand their Total Addressable Market (TAM) and enhance outbound sales efforts. Waterfall offers real-time data enrichment without long-term contracts, allowing companies to access premium data on a pay-as-you-go basis. The platform provides multiple specialized endpoints: Contact Enrichment for verified emails and profiles, Phone Enrichment for mobile numbers, Prospector for finding contacts at target accounts, Job Change tracking for monitoring customer movements, and Contact Search for resolving personal emails to business profiles. All endpoints use outcome-based pricing where credits are deducted only for verified results.

Key Features

Multi-Vendor Data Aggregation

Integrates over 30 data vendors to ensure extensive contact coverage across all geographies and sectors.

Real-Time Data Enrichment

Provides up-to-date contact information verified at the moment of request, not from cached databases.

Outcome-Based Pricing

Credits deducted only for verified results (emails, profiles, mobile numbers, job changes) — empty results are free, and one credit covers the entire waterfall regardless of how many sources are queried.

Contact Enrichment

Find real-time verified emails or match emails to complete business profiles with auto form enrichment, MQL profiling, and event list enrichment.

Phone Enrichment

Find mobile numbers (not landlines) for outbound prospecting, CRM enrichment, and ad audience building with connect-rate optimized vendor ranking.

Prospector

Search for contacts at target accounts by job title and get verified emails and mobile numbers in a single real-time API response with exclusion sets for net-new contacts.

Job Change Tracking

Monitor when customers switch jobs with outcome-based pricing — only pay for detected changes, checks that come back unchanged are free, enabling weekly CRM monitoring.

Contact Search

Resolve personal emails (Gmail, Outlook, etc.) to business profiles with current company, title, seniority, LinkedIn profile, and verified work email for PLG routing and lead scoring.

Proprietary Email Verification

Utilizes unique algorithms to enhance data accuracy with real-time verification at request time.

No Long-Term Contracts

Operates on a flexible, pay-as-you-go pricing model with volume-based discounts and monthly invoicing for high-volume customers.

Pros & Strengths

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Extensive Data Coverage: Access to a broad network of 30+ data vendors enhances lead generation across all geographies and sectors.

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Cost-Effective Outcome-Based Pricing: Pay only for verified results — empty requests are free, one credit covers the entire waterfall, and cost per result falls as coverage rises.

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Flexibility: No long-term contracts, flexible commercial terms, and ability to run alongside existing vendors for comparison.

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Real-Time Verification: Every email and phone number is verified at the moment of request, ensuring lowest possible bounce rates and highest connect rates.

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Unified API Schema: One schema and one API behind 30+ vendors — swapping sources doesn't change response shape, and leaving doesn't mean re-integrating.

Cons & Tradeoffs

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Limited Public User Reviews: Scarcity of feedback on major platforms makes performance assessment challenging for new evaluators.

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No Public Rate Card: Pricing requires a benchmark on your own data sample rather than transparent list prices, which may slow initial evaluation.

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Mobile Numbers Cost More: Mobile number enrichment carries higher per-credit cost than email enrichment due to underlying data costs.

Known Limitations

• Job change detection depends on moves becoming visible in public sources — cannot detect changes before they are announced publicly.

• Contact search resolution rate varies by email provider and is lower where individuals have no public professional footprint tied to their personal address.

• Pricing quotes require running a benchmark on a sample of your own records, which adds a step before commitment.

Pricing & Plans

Model: usage

Waterfall uses outcome-based pricing on credits: a credit is deducted only when a verified result is returned (verified email, matched profile, mobile number, confirmed job change). Empty requests are free. One credit covers the entire waterfall regardless of how many of the 30+ sources are queried. Per-credit rates depend on endpoints used and committed volume, quoted after a benchmark on a sample of your own records. Mobile numbers cost more than emails. Job-change checks are cheap at scale because unchanged contacts are never billed. Enterprise contacts in North America resolve on the first source; harder records go deeper at the same price. High-volume customers can use monthly invoicing based on prior consumption.

✓ Free Plan ✓ Free Trial

Pricing verified: 2026-08-20

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