★★★★★
The app stopped syncing after the last update and support took a week to reply. We lost orders during the outage and had to switch to a competitor.
Ultimate PO Box Blocker
by MSM TECHNOLOGIES
Stop PO Box orders at checkout for successful deliveries and lower shipping cost. 1-click setup.
- Rating
- 5.0
- Reviews
- 8
- Pricing from
- $8.08/mo
- Launched
- Oct 2023
First seen 18 Sep 2026 · Data updated 1 week ago
Worst recent reviews
1- and 2-star reviews reveal what this app gets wrong: the gaps a competitor could fill.
About Ultimate PO Box Blocker
If you're a merchant tired of dealing with lost packages, failed deliveries, or the extra costs associated with reshipping, then Ultimate PO Box Blocker is for you. Whether you're a small business owner or run a large e-commerce operation, our app is designed to make your shipping process more efficient and reliable. The app needs no manual setup for seamless integration but offers advanced customization options. Take control of your shipping process today.
Highlights
- Auto-block PO Boxes carriers like FedEx, UPS, DHL can't deliver to.
- Eliminate time, effort, cost resolving address issues after purchase.
- Real-time validation flags undeliverable addresses during checkout.
- Simple installation with seamless integration—no setup needed.
- Advanced options to customize settings for specific shipping needs.
Languages
English