Ability to customize the acknowledgement message

The email message sent out when a process/policy needs to be acknowledged is generic to process and rather unofficial. Our legal/compliance team wants to use the acknowledgement function. Since the message is inadequate, they will likely pursue an alternate solution. This will greatly reduce our ROI for Nintex Process Manager. We need a separate message for process vs. policy, and we need to be able to customize the message itself to be more meaningful to the people who receive the message.