Seamless Switch from Shopify App to Fulfillment: STOCKCREW Partners with Mitsui & Co.'s 'Plus Shipping'

Overview STOCKCREW, a company specializing in logistics fulfillment for e-commerce, has launched a new service integrated with Mitsui & Co.'s 'Plus Shipping' application for Shopify as of May 25, 2026. This collaboration allows Shopify merchants to seamlessly switch between self-shipping and third-party fulfillment directly within the 'Plus Shipping' app interface. As the e-commerce market reaches a scale of 26 trillion yen, and Shopify merchants face increasing logistical burdens from rising shipment volumes, both companies aim to provide logistics solutions tailored to the growth stages of these businesses.

Background of the Collaboration According to a survey by the Ministry of Economy, Trade and Industry, Japan's BtoC e-commerce market reached 26.1654 trillion yen in FY2024. Consequently, e-commerce vendors are facing significant complexities in logistics operations and critical labor shortages. Many Shopify merchants handle packaging and shipping internally during their initial launch phase but are increasingly struggling as their sales volumes grow.

Mitsui & Co.'s 'Plus Shipping' is a specialized app for Shopify that enables merchants to easily access shipping services from major domestic logistics companies at low costs. The service has received numerous requests from merchants who have reached their limits regarding shipment volume and desire more efficient delivery solutions, revealing a clear need for a bridge from self-shipping to the next growth phase.

Key Features of the Fulfillment Service 1. One-Click Switch from the Shopify App Merchants can complete the entire process—from application to service activation—within the 'Plus Shipping' app on Shopify, eliminating the need to leave their dashboard. 2. Service Activation in as Little as 7 Days Merchants can start utilizing the fulfillment service within seven days of application. Order information from Shopify is integrated with STOCKCREW's warehouse in real-time, automating the shipment process. 3. Pay-As-You-Go Pricing: Zero Initial/Fixed Costs, Starting at 260 JPY The service operates on a strictly pay-as-you-go basis with no initial or fixed costs. Merchants can leverage warehouses that operate 365 days a year, with rates starting as low as 260 yen for Nekopos-sized packages.

Future Outlook Through this partnership, both companies will continuously expand logistics solutions to match the growth stages of Shopify merchants. They are also considering future feature enhancements to accommodate larger shipment volumes and increased operational complexity for businesses that have already made the transition from self-shipping to fulfillment.