So I have been compiling data on a sheet I have for work. Now I have all the data I need and have all the formulas I need to make it work except an auto email function to let customers know that they need to make contact and update their expiration dates. The date of expiration and their email or data sets on the sheet already. Is there a way for excel to run a macro to find the 90 day 30 day and 15 day plus already expired customers and then send them emails?