To ensure customers are aware of the one-time use restriction, we recommend adding the disclaimer in two key locations where it will be most visible:

Checkout Page:

Include a note near the promo code input field or right before the final payment button. For example:

“Promo codes are valid for one-time use only.”

Placing it here ensures the customer sees it before completing their purchase.

Email Confirmation:

Add a brief disclaimer in the body of the confirmation email, ideally near the summary of the order or promo code used. For instance:

“Reminder: This promo code was valid for one-time use only and cannot be reused.”

This double placement helps reduce confusion and support issues by clearly communicating the promo code policy.