I’m looking for a way to streamline sending reminder postcards and emails to my customers. I want to send these reminders every month to my customers who’ve used my service during the current month going back 5 years. So the reminder will say “It has been 1,2,3,4, or 5 years since your last cleaning…” So if Mrs. Jones used my service 4 times over the past 10 years, is there software that will filter out the 3 older events and only show the newest scheduled event and do this in large quantities of customers simultaneously? I need the software to generate a database to use for an Outlook mail merge. I’ve been doing this manually in a spread sheet but it gets harder to keep current as the customer base grows larger. Please let me know your thoughts.