Sale campaign using reply back

Hi Teddy, 

Interesting use case. To get a better understanding, what is the reason you’d want to have the customer to jump through those hoops to get a discount code? 

Regardless, I believe this is not possible because clicks, opens, and received email metrics are not available for selection to trigger a flow.  If you use a customer service software like Gorgias, you could create a rule to check it and send a response (but the discount code may have to be static).

I’d recommend not going through the reply to get a discount code unless there was a strong use case.  In my experience, I haven’t seen much value in it (from a customer and brand standpoint).