Hi Perthshire Box Office team! Post show emails can be done by setting an email on the delivery method email schedule to x time after the show start time. Point 2f on this help article covers the email sequence and setting the send time - https://support.lineupnow.com/hc/en-us/articles/7494464413969-Delivery-Methods-Print-Rules

If you have any questions or need any further assistance with that, please email support@lineupnow.com