Canadian merchants on Magento 2 and Adobe Commerce shouldn't be stuck with flat-rate guesses or manual Snap Ship label entry. This extension wires the Canada Post Sell Online / Rating and Shipping & Returns APIs directly into your checkout and order workflow as a proper Magento carrier.

The module ships under app/code/Ecosire/CanadaPost, registering a custom carrier model that implements Magento\Shipping\Model\Carrier\AbstractCarrierOnline and CarrierInterface. Live rates are quoted via the collectRates() flow using your ship-from postal code, cart weight and dimensions, returning Canada Post services (Regular Parcel, Expedited Parcel, Xpresspost, Priority) as native checkout shipping methods. Admin configuration lives under Stores → Configuration → Sales → Shipping Methods with full system.xml fields, encrypted API credentials, and per-website scope.

Label and manifest generation runs from the order/shipment admin grid via a controller guarded by an ACL resource (Ecosire_CanadaPost::shipping), calling the Create Shipment endpoint and storing the returned PDF artifact. Domestic, US and international shipments are handled through a configurable service-to-method mapping, with optional signature, coverage/insurance, and proof-of-age flags passed in the request payload. On shipment creation, an observer on sales_order_shipment_save_after writes the Canada Post tracking PIN back to the shipment track record, so customers see real tracking in their account and emails.

Because every store's catalog weights, packaging rules, and contract numbers differ, we build this to order: discovery on your Canada Post account type (commercial vs. Solutions for Small Business), implementation, installation on your staging environment, UAT against your real cart scenarios, then production deployment. It is delivered as installable source you own — not a black-box subscription. Compatible with Open Source and Adobe Commerce 2.4.x.