In a previous email tool (RightNow) we had the ability to schedule emails which contained variable data that changed per send date.  This allowed us to create a 'Prayer of the Day' email that would send a new prayer to subscribers every day.  We would upload a spreadsheet that included prayers with the corresponding dates, and the program scheduled and varied the data automatically.  We're trying to manage this now by creating individual messages per day, but this is turning out to be quite cumbersome.  Perhaps some other clients would also like to schedule emails that contain variable content?