Create a CSV, XLS or XLSX file in the following format (download a sample):
Select the file, then add any address tags you'd like (to help identify these addresses; for example, you can tag a list of employee addresses as "employees"):
Send Mail
Upload one or more PDF files to send mail. Each file will be sent in a separate envelope:
Upload a single PDF file that will be split into individual envelopes. There will be a separator page between each envelope: Mailform will split the file and generate the individual envelopes: