Import Email Address Lists

Bulk import email address List Items by uploading a CSV file. Each row should be the details for a new List Item. The columns we allow are: - value - match_type (either 'email_address' or 'domain') A match_type of 'email_address' will need to match the entire email address of an individual, while a match_type of 'domain' will match on the email address domain of an individual (i.e. all email addresses with domain 'gmail.com').