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Blox: Block Customer Blacklist icon

Blox: Block Customer Blacklist

Block bad customers and chargeback abusers with the blacklist.

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

4.7 (20) on Shopify
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Block bad customers before they order again. Block customer fraud, repeat chargebacks, serial returners, and refund abuse with the community-powered blocklist.

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About Blox: Block Customer Blacklist

Blox stops repeat chargebacks, refund abuse, and serial returners before they place another order. When one merchant flags a fraudster, the community-powered blocklist protects all Blox stores automatically. Block customers by email, phone, address, or payment method. Deduplicate customers using multiple accounts. Auto-hold or cancel high-risk orders before fulfillment. No complex setup. No per-transaction fees. No AI black box. Every block you create protects the entire merchant community.

Last verified: October 14, 2026 · Fresh

App details

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

Key features

  • Stop fraud before fulfillment
  • Block or hold orders from any customer
  • Discover your worst customers
  • Cluster customers with multiple accounts
  • Community blocklist auto-protection
Integrations with:

Checkout Flows Fraud Assessments Fraud Filter Fraud Order Analytics Paypal Stripe Shopify Admin Visitor Analytics

3 plans · starts free · 30-day free trial

Free

Free

Standard

$19/month

Unlimited

$99/month

Plans and prices as listed on the Shopify App Store.

Ratings & reviews

based on 15 Shopify App Store reviews

Use the arrows to read individual reviews

Blox has been great! Small businesses are often targeted by bad actors, and individually, we have limited resources to protect ourselves. Blox changes that by allowing businesses to work together, share information, and protect one another. The best part is that the network only gets stronger with every new store that joins. It's a fantastic concept that gives small businesses a collective voice a...
— Toy Snowman
not sure yet
— Tuggerah Lakes
empty
— Biomedis - prirodna kozmetika
she claim fraud on orders after receiving
— Beauty Supply Outlet
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
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
The customer intel is invaluable for blocking decisions.
— needthattee
empty
— 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
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
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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