Delivr.ai vs. Epsilon: Independent Resolution vs. Agency-Owned Data

Epsilon, acquired by Publicis Groupe for $4.4 billion in 2019, operates the CORE ID identity graph covering 250 million+ US consumers with 200 million+ online profiles and 8 billion+ device linkages. CORE ID processes 45 billion+ intent signals daily and powers Publicis’s entire media and data strategy. The 2025 acquisition of Lotame expanded the combined graph to approximately 4 billion unique profiles globally. Delivr.ai offers an independent alternative with deeper PII resolution.

What Epsilon Does Well

Epsilon’s strength is scale and integration depth. CORE ID is one of the largest identity graphs in the market, built on decades of direct mail data combined with modern digital signals. The Conversant ad network maintains a massive authenticated user base. PeopleCloud CDP provides end-to-end data management, audience creation, and media activation — all powered by CORE ID.

With the Lotame acquisition, Publicis/Epsilon now claims 91% coverage of adult internet users globally. Estimated revenue is $2B+, making it the largest identity-focused entity within any agency holding company.

The Agency Ownership Problem

Epsilon is wholly owned by Publicis Groupe, the second-largest advertising holding company in the world. This creates a structural conflict for any agency or brand that competes with Publicis clients.

When you use Epsilon’s identity data, you are enriching a graph that powers Publicis’s competitive advantage in media buying. For brands working with non-Publicis agencies, this means your data improves a platform that may be used against you in competitive pitches.

Delivr.ai is fully independent. We serve agencies, enterprises, platforms, and publishers without structural bias. Your data enriches your own campaigns, not a holding company’s competitive position.

Matching Methodology

Epsilon uses a hybrid matching approach — deterministic backbone with probabilistic extension for reach. This is the standard Tier 1 model: high-confidence deterministic matches for the base, with ML-inferred matches to extend coverage.

Delivr.ai is 100% deterministic, end-to-end. Every resolution edge is anchored in a verified PII linkage. No probabilistic inference, no modeled matches, no accuracy degradation as the cookie ecosystem evolves. When we say a visitor is Sarah Chen, VP of Marketing at Acme Corp, that resolution is deterministic — not a statistical guess.

PII Output vs. Pseudonymous IDs

CORE ID is Epsilon’s proprietary identifier. Like RampID, it is a pseudonymous token — useful within Epsilon’s ecosystem but not directly actionable outside it. To activate CORE ID matches in non-Publicis systems, you need translation layers and additional integrations.

Delivr.ai delivers full PII: name, hashed email, phone, company, title. You own the resolved identity. You can activate it in your CRM, marketing automation, sales engagement tools, ad platforms, or any other system — without routing through a proprietary token ecosystem.

Pricing and Accessibility

Epsilon primarily serves Publicis clients and large enterprises with significant minimum commitments. Access to CORE ID is typically bundled with broader Epsilon/Publicis media and data services.

Delivr.ai offers flexible pricing tailored to buyer type: CPM-based for media agencies and publishers, record + CPM for omni-agencies and enterprises, and usage-based for platforms. No agency holding company gatekeeping. No multi-year bundled contracts required to access identity resolution.