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Help CenterSecurity and fraud controlsAdding a customer to the block or allow list

Adding a customer to the block or allow list

Last updated Aug 27, 2026Security and fraud controls

Reading this in another language? Use your browser's built-in translate option. Button and field names stay in English on purpose, to match what you see in Keysender.

Overview

Blocklist a customer to stop future deliveries to them. Allowlist a customer to let them bypass your fraud screening rules. Both lists are account-wide, so a block or allowance you add applies to every connected channel, starting with the next order.

TL;DR

  • Open People, then Customers, and find the customer.
  • Click the row's action menu and select Add to blocklist or Add to allowlist.
  • New customers must be added under Customers first; there is no way to add someone to either list by email alone.

Before you start

Make sure you have:

  • Access to your Keysender vendor account.
  • The customer's email, if they are not already in your Customers list.

Steps

Blocklist or allowlist an existing customer

  1. Open People, then Customers in Keysender.

  2. Find the customer, using Search customers if needed.

  3. Click the arrow next to Details on the customer's row.

  4. Select Add to blocklist or Add to allowlist. If the customer is already on one list, this menu instead shows Remove from blocklist or Remove from allowlist, alongside the option to add them to the other list.

    Customer row action menu with Add to blocklist and Add to allowlist options

You can also open Details on the customer, then More Actions, then Mark as Blocklisted or Mark as Allowlisted - the same result from the customer's own page.

Add a new customer first

If the customer has never ordered from you, add them before you can blocklist or allowlist them:

  1. Open People, then Customers, and click Add Customer.

  2. Enter their email, and optionally their name and phone number.

    Add customer dialog with First name, Last name, Email, Phone and Notes fields
  3. Click Save, then follow the steps above to blocklist or allowlist them.

Confirm it works

The customer shows a Blocklisted or Allowlisted tag next to their email under People, then Customers, and appears on the matching Blocklisted or Allowlisted tab. Blocked customers no longer receive deliveries. Allowed customers bypass your fraud screening rules. See Managing your customers for the rest of what that page can do.

Troubleshooting

Symptom Cause Action
A blocklisted customer still receives a code The order was placed, or already in progress, before the block was added Blocking only affects orders placed after the block; cancel or resend the in-progress order separately
The customer cannot be found to block They have never placed an order and were not added manually Add them under Customers first, then blocklist or allowlist them
The action menu shows the wrong option The customer is already on the other list The menu always shows Remove from the list they are currently on, alongside Add to the other one

If it still is not working

Submit a claim so Keysender Support can review it.

Frequently asked questions

What is the difference between the block list and the allow list?

The block list stops future deliveries to a specific customer. The allow list lets a customer bypass the security rules on your product database. Blocked customers no longer receive deliveries, while allowed customers skip your database security checks.

How do I block a customer I can find in my customer list?

Open People then Customers, search for the customer, then click Action then Details on their row. Select Blocklist or Allowlist. The customer then appears in the chosen list under People then Customers.

Can I add a customer who is not in my customer list yet?

Yes. Open People then Customers, select the Block list or Allow list tab, and click Add Customer. Enter the customer's email to add them manually. They then appear in the list you selected.

Related articles

Activating fraud monitoring on orders
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