Rokt found a business after the buy button.

There is a peculiar little pause at the end of an online purchase. The card has worked. The order number has appeared. For a moment, the customer is still looking. Most stores fill that space with a receipt. Rokt sees somewhere to make another introduction.

That distinction helps explain a business that reported $600 million in revenue for 2024. Rokt connects ecommerce companies with advertisers, using machine learning to decide which offer to show each shopper. The host gets a revenue opportunity. The advertiser gets a prospective customer. The shopper gets a proposal, which may or may not deserve another second.

The airline man and the receipt

Bruce Buchanan came to this problem through airlines. Before co-founding Rokt, he ran Jetstar, where the purchase journey offered room for more than the fare. His account of Rokt’s origin describes an opportunity to make checkout more personally relevant, using technology he thought was fragmented and clunky.

In 2012, Buchanan and Justin Viles founded Rokt by acquiring Rocklive. The intellectual move was to treat the surrounding transaction as useful territory. A customer buying something has supplied information that a casual browser has not: a decision, a context, a willingness to spend. Rokt built a business around making a timely second offer.

A banner enters an experiment

The mechanics become clearer in a LuckyVitamin case study. The retailer had a static banner on its confirmation page. Rokt tested alternative presentations and combinations of a partnership campaign and marketplace offers over five weeks. The old banner became the baseline.

Rokt’s published results reported a 200% increase in ancillary revenue, a 300% improvement in partnership-campaign conversion and a 55% reduction in that partner’s acquisition cost. The combined marketplace-and-partnership variant won and was deployed across all confirmation-page traffic. These were that experiment’s results, with that audience and those offers.

The practical lesson is accessible without buying Rokt: stop treating the receipt page as finished design. Keep a control. Change an offer, its presentation or both. Measure the commercial result. A weak static banner is a starting point for comparison; its replacement still has to earn its place.

Two customers, one small window

Rokt’s merchant-facing product, Thanks, places first-party and third-party offers after purchase. Those can include another brand’s promotion, an app download or the merchant’s own loyalty initiative. Ads serves the other side: businesses buying access to shoppers across the network. A retailer can therefore host offers while an advertiser pays to appear.

PayPal makes the arrangement particularly legible. Its partnership brings offers to post-transaction experiences across PayPal and Venmo, and merchant surfaces through Honey. PayPal also runs acquisition campaigns through Rokt. It can supply the attention and buy attention elsewhere. The same company occupies both sides of the marketplace.

“Our partnership with Rokt has created a diversified revenue stream for our organization”Stephanie Borges / Six Flags Entertainment Corporation

The product range now extends beyond that final page. Upcart addresses the cart; Pay+ personalizes payment-stage offers. Aftersell provides post-purchase upsells. Catalog brings third-party inventory into merchants’ assortments. The scope is growing from an advertising slot into software surrounding the transaction.

The click has a price

Rokt Ads describes a dynamic cost-per-click model using first-price auctions. Advertisers can optimize toward acquisition cost, return on ad spend or lifetime value. Payment for a click makes downstream measurement essential: an interested visitor and a profitable new customer are different entries in the accounts.

For smaller merchants, Aftersell publishes an entry Post Purchase price of $34.99 monthly for 500 monthly orders, with prices scaling by store order volume. Rokt Thanks is listed as free to merchants. That still leaves implementation, offer oversight and analysis as work someone must do. The public subscription price answers only part of the cost question.

Rokt has its own substantial investment bill. It announced a $325 million Series E in 2021. In January 2025, a separate $335 million secondary transaction valued it at $3.5 billion. A secondary sale transfers existing shares; that headline amount should not be read as fresh cash for operations.

Buying the pieces around the moment

The acquisitions reveal the direction. Aftersell arrived in 2024. In 2025, Rokt announced a $300 million investment in its combination with customer data platform mParticle. Canal followed, bringing distributed-commerce technology and a network of 1,900 retailers and direct-to-consumer brands at the time of the deal.

These additions supply different ingredients: merchant tools, customer data and merchandise. Rokt’s 2025 review reported more than 7.5 billion optimized transactions. Scale gives the company more occasions to match an offer with a shopper, although transaction volume alone cannot tell a merchant what its own customers will welcome.

Make the next offer earn its keep

For the advertiser, the corresponding discipline is to track what happens after the referral: completed orders, repeat purchases and returns. A busy offer can look persuasive inside a dashboard while adding little to the business. The transaction creates an opportunity to ask a question; it does not settle the answer.

Rokt’s distinction rests on its closed ecommerce network, offer-selection technology and connected products. It has company: Fluent also sells post-transaction advertising. Merchants can build their own promotions, use other upsell tools or preserve a quiet confirmation page. Search and social remain alternatives for acquisition spending.

The sensible merchant asks for a limited test, keeps a holdout and counts contribution after costs. Thin traffic makes learning slower. Poor offers, intrusive presentation or weak customer retention can spoil attractive click numbers. Those are commercial constraints, not claims that every checkout needs another ad.

There is a similar directness in Rokt’s published workplace policy: four office days weekly, plus a work-from-anywhere week each quarter. Its product proposition deserves equally clear terms. The customer has already bought something. The next offer needs to justify the interruption.