Renewal Invoice Generation emails

[Steve D]

I have some products on recurring billing with customer invoices reminders being sent out 7 days before the due date. 

I need these reminders to have different text content in the emails than an invoice  reminder that they would receive if just registering and purchasing for the first time.  In other words all future reminders (not counting their first order) would contain different text.

Is there any way to do that?

Thanks in advance