Hi @matt.steinruck
Thanks for posting your question in the community.
The way I would recommend approaching this is based on the Placed Order Shopify event. Ultimately, if a new customer uses the coupon code, the Placed Order event will pass the discount code used in the order details.
You can either use a flow filter to only allow users who used your coupon code to enter the flow or add a conditional split in the flow to filter users who’s recent order contained the coupon code.
If you’re planning to use a dynamic coupon code that’s unique to each user, consider adding a prefix to it. Then, in the flow filter or the conditional split, you’ll be able to set up your logic based on a “contains YOUR PREFIX.”
I hope this helps! Let me know if you have any questions.
@In the Inbox