8. Blocklist
The Blocklist keeps known bad buyers out before an order exists.
Go to Rules → Blocklist. It has two tabs: Setup and Blocked orders.
8.1. Who to block
On the Setup tab, add entries of these kinds:
| Entry | Notes |
|---|---|
| Email address | Blocked at checkout |
| Email domain | Blocks everyone from a domain, for example @tempmail.com |
| Phone number | Blocked at checkout |
| Country | Blocked at checkout |
| Customer tag | Works for signed-in buyers; guests are caught after the order |
| IP address | Checkout never sees a buyer's IP, so it is caught after the order |
You can add a note to each entry to remember why. An entry can also be set to Include, which lets a buyer through even when another entry would catch them.
Note: Customer tag entries need Shopify to approve the app’s access to customer data. If it hasn’t, a notice appears here and in Settings. Contact our support team and we’ll request it.
8.2. Message at checkout
Enter what a blocked buyer reads. A preview shows how it will look.
👉 Keep it neutral. Naming the blocklist only tells a buyer to try another email. For example: We can’t complete this order. Please contact us if you need assistance.
8.3. After the order
For buyers checkout couldn’t stop (IP addresses, guests with a listed tag, entries added later), choose what happens:
- Cancel the order automatically
- Tag the order for review: adds a blocklist tag you can find in Shopify admin → Orders
If you leave both off, those orders go through untouched.
8.4. Check a buyer
Type the email of a customer you expected to be blocked. The app walks the whole chain against your live store and names the first step that fails, or confirms everything checks out.
8.5. Blocked orders
The Blocked orders tab is a log of the orders the blocklist cancelled or flagged, and what each one matched on. It’s kept for 30 days.
Note: Buyers stopped at checkout are not listed, because no order is created.