Matchbook announces new IP to HEM matching—connecting IP addresses and hashed emails to unlock new audiences across channels.

Cross-Platform Targeting & Retargeting

Stay connected to your audience across every device

Matchbook enables true cross-platform targeting by using deterministic geolocation data to link IP addresses and mobile devices (MAIDs), ensuring your message reaches the right audience—whether starting on CTV and converting on mobile or retargeting website visitors.

Why Matchbook for cross-platform targeting & retargeting?

Matchbook uses billions of device-derived, consented signals to identify the most accurate connections between devices under the same roof.

Unlike probabilistic models, which rely on assumptions, Matchbook’s deterministic approach ensures confidence in your cross-platform campaigns.

What you can do with Matchbook

Extended Device Mapping

Identify all devices connected to a stable WIFI IP address and use MAID matches to deliver personalized messages across mobile and tablet devices. Ensure your brand is top of mind at every step of the customer journey.

Sequential Retargeting

Run campaigns that follow users across devices. Start with a brand awareness ad on CTV, then serve a retargeting message on their mobile device where they are most likely to convert.

Cross-Device Attribution

Understand the complete impact of your campaigns. Matchbook’s deterministic data ensures you can accurately attribute conversions across channels.

Omnichannel Frequency Management

Prevent ad fatigue and ensure optimal frequency by tracking impressions across devices. Matchbook provides additional data points enabling clients to control exposure across screens.

Matching Pathways

IP address to MAID

Retarget users on mobile after connected-device engagement, extend that engagement to larger screens like CTV or desktop, and measure attribution across the resulting conversions

Postcode, H3, Geohash

Enable location-based targeting by targeting devices within specific areas

HEM to IP address

Incorporate login and purchase-based identity (HEM) into the cross-device graph for more complete, deterministic targeting