This new method allows you to import Group members from a file that you have previously FTPd. There are two steps to using this method:
1. FTP the file containing the data to ftp://client.jangomail.com. Use your JangoMail username/password to login. Navigate to the folder called "GroupImportsAPI". Place the file there.
2. Call the ImportGroupMembersFromFile method. For the "FileName" parameter, enter the name of the file which you FTPd in Step 1.
This method allows you to import larger sets of data into Groups from any file, whereas the older method ImportGroupMembersFromData has limitations on how much raw data can be passed through in one method call.