---
title: "BoxGuard: PO Box Blocker Shopify App Profile"
description: "Carriers like FedEx and UPS cannot deliver to PO Boxes, causing returned packages, reshipment expenses, and address correction penalties. BoxGuard validates shipping addresses directly within Shopify Checkout before payment is processed. You can restrict PO Boxes, military APO/FPO addresses, parcel lockers, and custom keywords, while setting custom error prompts. Exempt trusted customer tags or specific products as needed to protect order fulfillment without slowing down checkout."
canonical_url: "https://shoplist.co/shopify-apps/boxguard-po-box-blocker"
markdown_url: "https://shoplist.co/shopify-apps/boxguard-po-box-blocker.md"
last_updated: "2026-11-03"
entity_type: "shopify_app"
slug: "boxguard-po-box-blocker"
source: "public Shopify app profile allowlist"
---

# BoxGuard: PO Box Blocker Shopify App Profile

> Carriers like FedEx and UPS cannot deliver to PO Boxes, causing returned packages, reshipment expenses, and address correction penalties. BoxGuard validates shipping addresses directly within Shopify Checkout before payment is processed. You can restrict PO Boxes, military APO/FPO addresses, parcel lockers, and custom keywords, while setting custom error prompts. Exempt trusted customer tags or specific products as needed to protect order fulfillment without slowing down checkout.

## Quick answer
BoxGuard: PO Box Blocker has 0 detected stores in Shoplist. This Markdown profile displays 0 public brand examples; it is not a complete customer list.

## Key facts
- Name: BoxGuard: PO Box Blocker
- Monitoring status: First-adopter watch
- Developer: Mad Syntax
- Developer profile: https://shoplist.co/app-developers/safestcart
- Shopify App Store URL: https://apps.shopify.com/boxguard-po-box-blocker
- Launch date: October 31, 2026
- Shoplist category: Shipping & Fulfillment
- Free plan signal: Yes
- Free trial signal: Yes

## Pricing summary
Free Plan: Free; Pro Plan: $9.99/month

Shoplist has not yet found reliable public storefront evidence connecting a Shopify store to this app. This does not mean the app has no users. Some apps are new, admin-only, server-side, theme-independent, or otherwise difficult to detect from public storefront signals.


## App Signals
As of November 3, 2026:

- Stores running it: 0, 0.0% of the stores Shoplist tracks
- Store movement, last 28 days: not enough observed days yet
- Primary App Store category: Order limits
- Listing reviews: 0

## Public callouts
- Block PO Boxes and parcel lockers in real time at checkout.
- Restrict military APO/FPO destinations and custom address keywords.
- Customize error messages to prompt buyers for a valid street address.
- Exempt trusted customer tags or apply rules to specific product tags.
- Apply address validation rules globally or only in selected countries.
## Shopify App Store categories
- Shipping solutions - Other
- Order limits

## Data note
Profile updated: November 3, 2026. This is the profile revision date, not a guarantee that every store was checked on that date.
Public snapshot built: 2026-11-03 17:05:53.203052\+00
Detection metrics refreshed: 2026-11-03 10:00:00.337189\+00
Public app evidence date: 2026-11-03 02:05:02.226366\+00
This generated Markdown profile intentionally exposes only public, stable app-profile fields and a small public app-stack sample from Shoplist. It excludes private contact data, people data, internal scores, crawl provenance, full datasets, and unstable operational fields.

## Related links
- [HTML app profile](https://shoplist.co/shopify-apps/boxguard-po-box-blocker)
- [Shopify apps directory](https://shoplist.co/shopify-apps)
- [Shoplist data methodology](https://shoplist.co/data-methodology.md)