La guía: how Mexican shipping labels actually work
In Mexico the shipping label is the guía — the numbered waybill that is simultaneously the address label, the tracking document, and the contract of carriage. With FedEx you obtain one by booking online (creating and printing the guía at home), at a FedEx service center, or by purchasing guías prepagadas — prepaid waybills bought in advance at a fixed rate for a given service and weight band, filled in when you're ready to ship.
Prepaid guías are the workflow hack Mexican e-commerce sellers lean on: buy a batch at the start of the month, and each sale becomes address-in, box-sealed, drop-off — no per-shipment purchase step. Our generator complements the pattern by producing clean address blocks and reference labels to pair with the prepaid guía's barcode document.
Northbound: the US corridor from the sender's chair
FedEx's Mexican network is engineered around the US border, and northbound shipments show it: integrated customs brokerage, electronic invoice transmission ahead of the truck or aircraft, and USMCA origin handling for qualifying goods. For a Mexican seller shipping to American customers, the operational requirements are the invoice trio — specific description, honest value, correct origin — plus a recipient phone number for the brokerage desk.
Categories with extra US import requirements (foods, supplements, leather, plant products) deserve a pre-check before the first shipment, not after the first seizure. FedEx's brokerage handles the routine; the exceptions reward preparation.
Reading coverage honestly: express Mexico vs extended zones
FedEx reaches all 32 states, but service level varies by geography: next-day express serves the metropolitan and industrial map, while extended zones — rural municipalities and remote areas — ride longer schedules and carry surcharges. At quoting time, the postal code decides everything; two towns an hour apart can price differently.
For sellers, the practical move is checking coverage tier for repeat destinations once and pricing shipping accordingly, rather than discovering the extended-zone surcharge on the invoice after promising a customer free shipping.
💡 Quote by postal code, not by city name — Mexican metropolitan areas mix express-tier and extended-zone codes, and the CP on the label is what determines both the promise and the price.
Printing the guía: thermal, laser, or the counter
A FedEx guía prints three ways in practice: at home on a laser or inkjet (fold-and-pouch or full-page with the barcode section unobstructed), on a 4x6 thermal printer for sellers running daily volume, or at a FedEx service center from the booking's QR code when no printer is available. Whichever route, the constraint is the same — the barcode must lie flat, uncreased, and uncovered, because a guía that won't scan gets hand-keyed at best and misrouted at worst.
Volume sellers converge on thermal for the same reason worldwide: no ink, peel-and-stick speed, and label stock that matches what every carrier's sorters expect. Our generator's 4x6 output is sized for exactly that stock, so the address block and reference labels print on the same roll as the paid guías.