Creating followups to Commerce Orders for each Line Item I had asked a question in another thread, and thought it might be helpful to create its own thread just in case it could be helpful to any other developers out there:

"I am trying to create a rule which follows up on existing orders of specific products. Each product has a different time interval for "follow up reminder", and my rule should trigger an email to be sent to a customer at a date which is calculated Order Creation Date + Follow Up Interval.

ie Order Creation + Value provided from Products in the order"
I wanted to share how I solved this problem: I created a rule which is dependent on an Order's Status being "Completed". This rule runs a custom PHP script which loads the Completed order Entity, retrieves each Line item and checks for its field called "Follow-up", which gives a time value in weeks