The Multi-Carrier Shipping Suite for Magento 2 is a build-to-order extension — ECOSIRE engineers it against your store, installs it under app/code/Ecosire/MultiCarrierShipping, and supports it on your live environment. This is not an instant Adobe Commerce Marketplace download; it is a custom module shipped with an honest delivery lead time so it fits your carrier accounts, theme and checkout exactly.

At its core, the suite registers as a native carrier model implementing Magento\Shipping\Model\Carrier\AbstractCarrierOnline, so live rate requests from UPS, FedEx, USPS, DHL, Aramex, Canada Post and Australia Post return through Magento's standard collectRates() flow and render in Luma, Hyvä or PWA checkout with no theme hacks. Carrier credentials and per-service markup rules live in a dedicated admin configuration section under Stores → Configuration, gated by granular ACL resources (Ecosire_MultiCarrierShipping::rates, ::labels, ::pickups).

Fulfilment happens from the order grid: a mass action generates bulk shipping labels and packing slips (PDF via Zend_Pdf/tcpdf), schedules carrier pickups, and writes tracking numbers back to the shipment so Magento fires sales_order_shipment_track_save_after and dispatches customer notification emails automatically. An observer on sales_order_shipment_save_after keeps tracking in sync, and a cron job polls carrier APIs to refresh delivery status.

Integration uses dependency injection (di.xml), plugins/interceptors rather than core rewrites, and service contracts so rates, labels and tracking are exposed over REST and GraphQL for your OMS, ERP or headless front end. Works on Magento Open Source and Adobe Commerce (B2B shared-catalog and website-scoped rate rules supported). You receive the full source, a deployment runbook, and post-launch support.