Gmail auto emailer

I want to send out emails to a list in gmail. The program would send a specific drafted email in Gmail to each person on the list individually. The list of recipients are all in column A of a .csv file in excel. The loop function will copy address in A1 and put in the gmail draft and send the email out. Then the loop will go to A2 and etc....I want an input to select the specific draft email in the drafts folder to send. I want an input to chose the specific .csv file to read for email recipents. I want 1 email to go out every 15 seconds until the loop finds a blank space in the .csv file.