The program warns you (birthdays and celebration day), three days before and two days before and the day before and of course the D-Day. You can send an email but only D-Day. For the celebration day, you can send an email the day before and the D-Day. In the preferences, you can change the colors of the table and highlighted. Yes, the program highlights the people who have their anniversary in 30 days. Same for those that have their celebration day but with another color. There is also a third color for people who have their birthday and their celebration day within 30 days. You can send emails with your own address. Thus, the sender will be good to you and not the address of the program (the 'Default' mode). However, you will have the parameters of your provider to send personalized emails. It's not very complicated. Only two parameters are required. For some providers, the information is pre-filled by the program.