Hi Daviking,
Opt In email allows you import lists. However, if you want accounts created,
Interactive User Import would be a better fit for you. This will allow you to import a list, set up usernames and passwords and send out emails.
Dynamic Registration offers a built-in integration with Opt In Email. You will need to use checkboxes to sign up for newsletters then go to Module Configuration, Opt In Settings/Integration. If you go through the setup wizard, ou can make a very simple registration with basic fields so it mimics an Opt In signup look and feel.
You might consider getting the
Collection 3.0 so you get all these modules at a very good package price instead of purchasing modules individually.
Please let us know if you have other questions. Thanks!
Candace