How do I block or delete a customer account?

Go to Customers → Manage Customers.

• Block: open the customer, click Block user at the top right and confirm. They can no longer sign in and see "This account is disabled." Click Activate user to undo it. You can also set Status to Inactive on the Profile tab.
• Delete: click Delete on their row in the list. This can't be undone from the admin; the customer disappears from the list and from exports, and their past orders stay under Orders.

If you might want the account back, block it rather than delete it.