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Guides on checkout protection and discount abuse prevention.
Same customer, multiple emails, same discount
A single customer can use your discount code five times with five Gmail variations. Shopify counts each one as a new person.
How to prevent discount code abuse on Shopify
Your welcome discount is probably being used more than once. Here's how it happens and what you can do about it.
Guest checkout makes your discount codes worthless
If your store allows guest checkout, your 'one use per customer' discount setting does nothing. Here's why.
Why Shopify's 'Limit One Per Customer' Isn't Enough
Shopify's built-in 'limit one per customer' setting has a fundamental flaw: it relies on customer accounts, not actual identities. Here's why that matters and what to do about it.
Shopify's 'limit one per customer' is per account, not per person
The setting does what it says. One per customer account. The problem is that one person can have five accounts.
5 Ways Customers Game Your New Customer Offers
New customer offers are a proven acquisition strategy, but savvy shoppers have figured out how to exploit them. Here are the five most common tactics and how each one works.
The Complete Guide to Shopify Checkout Fraud Prevention
From discount abuse to fake orders, Shopify checkout fraud takes many forms. This comprehensive guide covers every type of checkout fraud and the strategies that actually prevent it.
How to Detect Fake Emails at Shopify Checkout
Fake and disposable emails are the primary tool for checkout abuse. Learn the techniques for detecting them in real-time during Shopify checkout, from normalization to domain verification.