Fullcontact

FullContact is an identity resolution and data enrichment platform that helps organizations unify, enrich, and activate customer data across channels. The tool ingests fragmented identifiers—such as email addresses, phone numbers, device IDs, cookies, and postal addresses—and resolves them into persistent, privacy-compliant person and household profiles. Through its identity graph and APIs, FullContact enables users to append demographic, behavioral, and social attributes to existing records, improving the accuracy and depth of customer databases.

Key capabilities include real-time and batch identity resolution, data enrichment, audience building, and cross-device matching. FullContact supports use cases such as improving CRM data quality, enhancing customer segmentation, powering personalized marketing, and enabling more accurate attribution and measurement. Marketers can use FullContact to build richer audience segments and sync them to ad platforms, while product and analytics teams can create a more complete view of users across devices and channels.