Creating a CSV with a Spreadsheet Editor 1.) Open a spreadsheet editor, like Microsoft Excel. 2.) Add the following column headers: email_address, first_name, and last_name. 3.) Add the e-mail address, first name, and last name for each human target to a row in the spreadsheet. The information for each human target needs to be on a separate row. 4.) When you are done, save the spreadsheet as a CSV file.