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Plan: Pro.
Cash on delivery is wonderful for conversion and brutal on fraud — refused packages, fake addresses, and serial offenders are real costs. The Blocklist lets you stop known bad actors and suspiciously large orders before they’re ever placed. Open Checkout settings → Blocklist to enable it.

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What you can configure

Email blocklist

Emails that can’t complete the popup. Matching is exact and case-insensitive.

Phone blocklist

Phone numbers that can’t complete the popup. Matching ignores country-code prefixes and compares the last 9 digits, so reformatting the number doesn’t slip through.

Max quantity per order

Cap the total number of items in a single order. Useful when fraud shows up as absurdly large COD orders.

Custom blocked message

What blocked buyers see. Keep it polite and generic — “We can’t process this order online, please contact us.”

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How it works for the buyer

1

Buyer fills in the popup

Just like normal — contact, delivery, confirm.
2

Sendway checks silently

At the moment of confirmation, the order is checked against your blocklists and quantity cap.
3

If blocked

The buyer sees your message instead of a confirmation. No order is created in Shopify.
4

If allowed

The order is placed normally.

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Know who you’re dealing with

Alongside the blocklist, the Orders page shows a risk indicator (a thumbs-down next to the customer) when a buyer’s phone has reports in NekorekTen (Bulgaria’s problem-buyer registry) or a poor pickup record in NepoStop. These signals inform, never block — connect NekorekTen with your API key on the Blocklist tab, NepoStop works out of the box. Use them to decide who goes on the blocklist. See Manage orders.

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Practical tips

Every refused COD package is a candidate. Add the phone and email as soon as the courier confirms the refusal.
Set it just above your usual maximum order size. Genuine bulk buyers can always contact you directly.
Don’t tell repeat offenders why they’re blocked — they’ll reverse-engineer the rule.
The Blocklist runs when the popup order is placed. Orders through Shopify’s native checkout aren’t filtered — if fraud is a big problem, also switch on Hide Shopify’s checkout buttons.