Opt-in Samurai plugin lets you create unlimited local mailing list in your WordPress admin area. You can categorize your opt-in forms to distribute the data in different mailing lists based on your campaigns.
In your WP-Admin area, navigate to Opt-in Samurai > Local Mailing Lists tab. This page will show you the existing mailing lists you have. You can remove the mailing lists here.
Warning! Deleting a mailing list will NOT delete the subscribers inside. However the subscribers will go hidden but still be available in the database.
On top of the page, there is a simple form to add a mailing list, just enter the name and hit “Add Mailing List” button.