First, create your membership in Nanacast.

Then once you have created it you can Manage > Memberships and under each membership, you will see a members management line with a link to import as one of the options.

Click on the import link and you will see an explanation for the import process, which will lead you through the process as you are importing.

For more detailed information on the import process, please see the following knowledgebase article:

http://support.nanacast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=216

Related:

http://support.nanacast.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=121

Additional keywords: Import, Customers, email list