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Blox: Chargeback Blacklist

Block customers with the auto-grouping community blocklist.

by Blox · Launched: February 2025 · Free plan available.

4.6 (16) on Shopify
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Fraudsters reuse emails, cards, and addresses. Block them once using our community blocklist to automatically stop their next attempt and prevent chargebacks.

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About Blox: Chargeback Blacklist

Blox stops the customers who defraud you. Block repeat fraudsters, prevent chargebacks, and stop refund abusers before they place another order. Cancel high-risk orders before fulfillment. When one store flags fraud, all stores are protected. A merchant-powered blocklist that turns every block into shared protection against the internet’s worst fraudsters. Customers are deduplicated. Simple rules. No AI black box. No per-transaction fees.

Last verified: August 23, 2026 · Fresh

App details

Developer
Blox
Category
Store management
Pricing
Free plan available
Launched
February 2025
Rating
4.6 (16) on Shopify

Key features

  • Free for development stores
  • Up to 1000 orders per month
  • Block or hold orders from any customer
  • Discover your worst customers
  • Cluster customers with multiple accounts
Integrations with:

Checkout Shopify Admin

3 plans · starts free · 30-day free trial

Free Dev Plan

Free

Standard

$19/month

Unlimited

$99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 12 Shopify App Store reviews

Use the arrows to read individual reviews

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— Fresh Lens | CanadianContactLenses.com
Great experience for us so far. Filled a gap we had in our current tooling, definitely a huge recommended essential item for back office, fraud prevention for anyone. Part of my personal day 1 installs here now.
— A Pup Above
Great idea for sharing blacklist across all stores using them. Hope more people use them ASAP. However need these improvements: 1. to allow adding of customers to the blocklist via tags. (Update: they implemented this, working) 2. Prevent blocked customers from checking out in the first place, not cancel after they paid. (In progress)
— takeitglobal
The customer intel is invaluable for blocking decisions.
— needthattee
The helpful insights are super easy to use for our customer support agents, and this gave us a great grip on fraudulent orders. We were able to literally get rid of all our return and replacement abusers.
— DermStreet
This app is amazing and has saved me so much time, canceling every fraudulant order since i signed up. Very highly reccomended!!
— Kristen Leigh Cosmetics
wonderful app
— Nami Matcha
Great service!
— Hydrant
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— AFV Clothes
Unfortunately, we're still getting chargebacks due to orders being flagged high risk but were not put on hold by Blox. Thanks.
— Qhemet Biologics
blox is our new favorite employee. it caught a blocked person (return fraud) who kept making new emails and still caught every one of them. Absolutely legendary and so satisfying to watch
— Swiss RX
Looooove blox. We have a huge issue dealing with a ton of return fraud/abuse as well as weird customer behavior. Been using Blox to find unprofitable or problematic customers and cut them out of our customer file to save us the operational and financial headache
— Sozy

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