For example, I want send an automatic thank you templated email to someone using 1 email template for there "generous donation" for donations over $1,000. -- included would be some extra emotion graphics.
Whereas I would like to send automatic thank email using a 2nd email template that thanks someone is a less intense way for donations of $100 dollars or less.
Likewise, I would like to send different templates for donations of different types -- wire transfer, check, even service donations (e.g. want to provide free marketing services)