Acknowledge without overpromising
Confirm that the order was received and restate the relevant campaign, while distinguishing order receipt from final incentive qualification when those are separate events.
Use consistent status language
Define customer-safe terms for pending review, qualified, not qualified, delivered, and changed outcomes. Use the same terms across email, support scripts, and reporting.
Keep the next step visible
Every message should tell the customer whether action is required, the expected timing, and the legitimate support channel. Avoid links or requests that train customers to disclose sensitive information.