Identity resolution
Match emails, phones, and identifiers to a single person profile.
Resolve and enrich customer identities with person and company data through APIs.
FullContact is an identity resolution and data enrichment platform that connects fragmented customer records into a single person profile. Through its APIs, businesses send an email, phone number, or other identifier and receive matched person and company attributes, social profiles, and demographic data. Marketing, data, and product teams use FullContact to enrich leads and site visitors, unify customer records across systems, and improve targeting, personalization, and audience matching for campaigns.
Ashley N. B.
Director of Public Policy
“Liked how it pulls web data into contacts, accurate business card transcription, merge review, many integrations, and CSV export. Found a monthly card upload cap, no business account auto-sync, and slow support.”
Sunitha H.
National School Feeding Program Facilitator
“Liked having extensive contact tools in one platform and the many integrations that keep contacts synced across services. Noted no major drawbacks.”
Jason D.
Founder & Managing Partner
“Liked the simple implementation, rich data, strong developer portal, and multiple pricing tiers. Found prices higher than hoped and the enrich and contacts APIs hard to tell apart.”
Paolo P.
CEO
“Liked the ease of use, comprehensive enriched data, fast responses, and helpful support. Found that contact update API calls cost extra and that some returned data is incorrect.”
Ian K.
Founder, Experimenter, and Contributor, CA Accelerator
“Liked the deeper insight it gives into website visitors and product users. Found that prices change over time without adding matching value to the service.”
Scott P.
Chief Executive Officer
“Liked that the service is central to the value of their own product, runs fast, and keeps improving. Found frequent pricing changes make choosing a package unclear.”
Chris V.
President
“Liked the strong syncing of contacts from multiple sources, the simple setup, and the Zapier integration. Found concern that user contact data may feed the enrichment service.”
Jennifer H.
Real Estate
“Liked how well it finds missing contact details, the responsive live chat support, and many integrations. Found Google Contacts sync created duplicates and Outlook support was missing then.”
Victoria M.
Communications Coordinator
“Liked the useful Gmail integration and the strong contact tagging options for organizing records. Found that less tech-savvy staff members had difficulty using the tool.”
Kevin F.
Consultant
“Liked how it keeps contacts synced across many platforms and updates profiles automatically from social accounts. Found that the free version lacks several core features.”
Dan R.
CTO
“Liked that it is stable, fast, easy to integrate, and useful in most cases. Found that typos or extra text in company names often return no results at all.”
Aleksandr T.
CTO
“Liked the well-documented API and its value for enriching lead and company data. Found that it often returns no data for submitted email addresses.”
Sergio S.
Project Manager
“Liked the concept, syncing across multiple services, and enrichment from LinkedIn. Found merging unreliable, including merging different people, and unmerge did not fully restore contacts.”
Brook B.
Owner
“Liked the accurate business card transcription and how easy the tool is to use for managing contacts. Found that some integrations were still missing at the time.”
Ray P.
Membership
“Liked the concept and the automatic enrichment of contact information. Found that conflicting changes among staff caused problems, and the team eventually stopped using it.”
Anthony R.
Director of Digital Strategy
“Liked how the open API makes data enrichment easy to add to existing systems. Found that using it well requires some understanding of how APIs work.”
David M.
CEO
“Liked that it gathers social profiles without asking users to provide them. Found data sparse, with only about 30 percent of users matched, and social profiles often inaccurate.”
Victor G.
CTO
“Liked the easy integration, clear usage dashboard, and good support. Found coverage low at 15 to 30 percent, and adding LinkedIn links costs extra time and money.”
Allen K.
AE
“Liked its usefulness for matching company and individual data, with about a 40 percent US match rate. Found that a developer is needed to integrate the API.”
Robert R.
Media Manager
“Liked the reliable, up-to-date data and how easy it is to integrate into existing workflows. Found the price of the higher tiers too expensive.”
Enterprise B2B data
Large contact and company database
B2B data enrichment
Real-time company and person enrichment
Identity resolution at scale
Privacy-focused identity graph for advertising
Developer data APIs
Large person and company datasets