Here are some things to double-check:

  • Make sure the CSV file has the header row and that all column headings are spelled correctly. 
    View Sample File
  • Check that the First Name and Email Address fields in each row are filled in.

  • Check that you don't have any invalid email addresses.  Only one email address with no extra punctuation after the domain is allowed per each row.

  • Here are examples of invalid email address formats:
    sally@hotmail.com?
    sally@hotmail.com,
    sally@hotmail.com <Sally Jones>
    sally    @hotmail.com,sandy@yahoo.com