1. To add multiple subscribers, go to Audience > Manage Contacts > Import Contacts > Add Multiple Subscribers: 2. Type in or copy/paste one email address per line. The first line must contain column names. Separate any additional information, like first and last names, with commas or tabs. Then, click Next Step. 3.
If you are importing a .CSV file, the first thing you should do is to make sure your list is formatted correctly. Make sure all your header rows are labeled. If you get an error similar to: Undefined method `match’ for 58103:Fixnum Illegal quoting in Line 1 Email was not