If you have a file with your contacts you can easily upload that to Party City to and quickly build your recipient list.
1. The first step is making sure the file is saved as a .csv. If not you can open your file, select "Save as" and choose the CSV (Delimited) file type
2. The file should have at least one column with contact(s) email address. A second column can be included with the contact name. The columns should be titled Name and Email