Fastrr COD
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modlet: Block PO Box & Lockers
Prevent return fees and failed deliveries instantly.
by modlet · Launched: March 2026 · Free plan available.
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About modlet: Block PO Box & Lockers
Protect your shipping margins with reliable, global PO Box blocking. Built natively into Shopify Checkout, it physically blocks checkout completion for restricted addresses—ensuring 100% reliability. Why offer a generous free tier? Built by a veteran cloud architect, our highly efficient infrastructure keeps costs low, and we love helping new stores get off the ground. Grow with us for free, and upgrade to Pro as your volume increases or when you need granular, custom shipping rules.
Last verified: August 20, 2026 · Fresh
App details
- Developer
- modlet
- Category
- Marketing & conversion
- Pricing
- Free plan available
- Launched
- March 2026
- Rating
- 5.0 (1) on Shopify
Key features
- Block PO Boxes globally (Instant setup)
- Up to 250 Store Orders per Month
- Native & Secure Checkout Validation
- Address Simulator & Testing Tool
- Unlimited Orders & Address Validations
Checkout Shopify Admin
3 plans · starts free · 14-day free trial
Free
Free
Pro
$10.99/month
Enterprise
$99.99/month
Plans and prices as listed on the Shopify App Store.
Ratings & reviews
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