E-commerce company Rakuten has acquired portfolio company Slice for an undisclosed amount to get access to data technology for analysis of its users.

US-based e-commerce app Slice has been acquired by Japan-based online retailer Rakuten for an undisclosed fee, the Wall Street Journal reported on Friday.

Slice mines email inboxes for purchasing receipts to create data and notifications for consumers when items are delivered, special offers become avaliable or when money can be recouped from previous purchases.

The acquisition has been made as Rakuten plans for a possible expansion into the US and it aims to increase its product offering to compete with…