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The automatic quoter (checkout) of your store shows real-time shipping options when your buyer is about to finish their purchase. By default, all the carriers you have active appear, regardless of whether they can deliver to the address the buyer entered.
This can cause a carrier to appear available at checkout, but then fail when generating the label because it does not have coverage in that zone, creating errors, incomplete orders, and a poor experience for your buyer.
Custom shipping zones let you define exactly in which states or cities each carrier operates. Checkout filters automatically: when your buyer types their address, the system detects their location and only shows the carriers that can deliver there.
Every time a buyer enters their address at checkout, the system:
If you configured restrictions by service type within a zone — for example, only economy rate and not express — checkout also applies that filter automatically.
Go to Ecommerce Pro > Set up your store.
Choose your store and click Settings.
Find the Automatic quote at store checkout section.

You will see the list of carriers active at your checkout. Next to each name you will see how many services it has active.
Click the Global coverage button that appears to the right of the carrier you want to configure and select New zone.

The New shipping zone form will open with the following fields:
Select the states or cities this zone covers. You have two ways to do it:
Using predefined regions At the top of the form you will find shortcuts: Entire country, North Zone, Central Zone, CDMX, West Zone, South Zone, and Southeast Zone. If the carrier’s coverage matches one of these groupings, select it and the corresponding states will be marked automatically.
Selecting state by state If the coverage is more specific, go through the list of the 32 states and mark the ones that apply. If the carrier only covers certain cities within a state, click Cities next to the state name to choose only the ones that apply.

Click Save. The zone will be created and assigned to that carrier.
From that moment, that carrier will only appear at checkout when the buyer’s destination is within the states or cities you configured.
Can I use the same zone for several stores? Yes. You can create a zone once and assign it to multiple stores. Each store independently manages which carriers operate within that zone.
What happens with carriers I do not assign to any zone? They keep appearing normally for all destinations, with no restriction. Only the carriers you configure with specific zones are limited by that setting.
Can I configure zones by neighborhood or ZIP code? For now, zones are defined at the state and city or municipality level. Coverage by neighborhood or ZIP code is not available in this version.
Does this feature affect the labels I generate manually from Envia? No. The zone filter applies only to your online store checkout. Labels you generate directly from the platform are not affected.