How to Set-Up the Invite CSV File for Upload
To be able to import email lists for invites, only CSV (Comma Separated Values) files are valid. The file should only have the following values in the same order First Name, Last Name and Email. See below a correct example of the set-up.
Using a Spreadsheet to Create a CSV File
An easy way to create a CSV file for import is starting with a spreadsheet and exporting it as a CSV file. In this case, columns need to be created with the values First Name, Last Name and Email in that same order (see example below). After the spreadsheet is completed, simply export as a CSV file and you will be able to use that file for importing the email list.