Cross-border brands rarely have one BNPL provider that covers every market. Klarna wins in the EU and US, Tabby and Tamara dominate the GCC, Afterpay leads in ANZ, and Affirm carries higher-ticket US carts. Bolting on each provider's stock widget separately leaves you with inconsistent messaging, providers shown to shoppers who can't use them, and no view of which option actually lifts conversion.

BNPL Aggregator & Messaging Hub is a build-to-order Shopify app that ECOSIRE designs, builds, and installs on your store. It sits on top of your existing provider accounts and decides — per shopper — which BNPL option to surface, where, and in what order, using geo and cart-value eligibility rules you control. Installment messaging blocks render on product, cart, and checkout via Theme App Extensions (app blocks) and the Storefront, with each provider's calculated "4 payments of X" copy kept accurate to the live cart total.

This is not an instant App Store download. After purchase, ECOSIRE scopes your provider mix and markets, builds the app against the Admin GraphQL API with the OAuth scopes it needs, wires webhooks for order and checkout events, stores routing rules and eligibility config in metafields, and deploys it to your store. You keep your own merchant agreements with each BNPL provider; we orchestrate the experience around them.

You also get A/B testing of provider ordering, a fallback chain so a degraded provider never blanks the messaging slot, and unified analytics that attribute impressions, clicks, and assisted conversions across every provider in one place. Typical delivery is 2–4 weeks, and ECOSIRE supports the build after launch.