Identity infrastructure for the modern advertising ecosystem.
Advertising runs on identity. Whether you're activating audiences, measuring conversions, enriching customer data, or building identity products, success depends on connecting fragmented signals back to real people. Retention.com helps adtech companies resolve, enrich, and activate identity at scale - through real-time APIs and bulk datasets, delivered the way that fits your stack.
One partner for audiences, attribution, and identity.
Retention.com provides identity data that helps advertising platforms connect emails, devices, IPs, consumers, professionals, and companies into actionable audiences and measurable outcomes.
Audience Onboarding
Translate first-party signals into addressable audiences across platforms.
Identity Resolution
Collapse fragmented identifiers into a single stable person.
Customer Data Enrichment
Add demographic, professional, and behavioural depth to known records.
Cross-Device Identity
Connect MAIDs, IPs, cookies, and emails to one household and person.
Attribution & Measurement
Tie exposure to outcomes with persistent identity keys.
Retail Media
Power retailer audiences and closed-loop measurement at scale.
Data Clean Rooms
Bring resolved identity into privacy-safe collaboration.
B2B Audience Creation
Build professional audiences keyed to verified individuals.
Identity Graph Construction
License the raw materials to extend your own graph.
Resolve a person from any signal.
Pass a hashed email, MAID, IP, personal email, or business email - and receive the identity signals available on that individual.
Core Identity API
One endpoint, every signal: HEMs, MAIDs, recent IPs, personal and business emails, verification status, and confidence scoring. For resolution, onboarding, and graph expansion.
Consumer Identity API
Resolve anonymous traffic and offline records into real consumers - with geography, email validation, recency, and confidence. For audiences, attribution, and enrichment.
Professional Identity API
Add professional context: business email, LinkedIn, title, department, seniority, company, industry, employee count, and revenue. For B2B targeting and ABM.
Identity data delivered at scale.
Need millions or billions of records? License recurring identity datasets for onboarding, enrichment, graph construction, and large-scale activation.
IP-to-HEM
Residential IPs ↔ hashed emails. For onboarding, identity graphing, household targeting, and attribution.
IP-to-MAID
IPs ↔ mobile advertising IDs. For mobile activation, cross-device analysis, and identity expansion.
MAID-to-HEM
Mobile devices ↔ email identity. For matching, resolution, measurement, and activation.
Consumer Enrichment
Verified consumer attributes, validation signals, location, and identity confidence.
Business Enrichment
Professional and firmographic intelligence - business emails, titles, departments, company, LinkedIn, org context.
Custom Feeds
Tailored deliveries scoped to your stack, geography, and refresh cadence.
Not Just Another Identity Graph
Most identity solutions are limited by the size and quality of a single graph. Ours isn't.
By combining our proprietary identity graph with a waterfall of leading identity providers, we maximize coverage, accuracy, and match rates across every publisher touchpoint.
With more than 250 million consumer identities and the largest B2B dataset layered on top, we deliver a uniquely rich view of audiences that competitors simply can't replicate.
This unmatched scale and depth enable publishers to identify more users, build more valuable audiences, and unlock greater revenue from every impression.
Flexible delivery. Built for scale.
One Identity Graph
Consumer and professional identity from a single source.
Flexible Delivery
Real-time APIs for lookups, datasets for large-scale activation and enrichment.
Built for Scale
Designed for high-volume advertising, identity, and measurement workloads.
Consumer + Professional
Understand people as consumers and professionals - not just identifiers.
Continuous Refresh
Signals are continuously updated and validated for coverage and accuracy.
Partner-Grade Support
Identity specialists embedded with your team from integration to scale.
Power your next identity product.
DSP, SSP, CDP, measurement, retail media, clean room, marketplace, or attribution - Retention.com is the identity infrastructure behind it.