Switching from default Email Subscribers to Mailchimp

Hello, by default my WordPress page has a plugin called “Email Subscribers” which I used so far to build an email list. Now I am in the process of switching to Mailchimp, and I am confused about how the old Email Subscriber columns/fields map to Mailchimp.

My old list has a column “name”. Should I create a Mailchimp column called “name” or is “First Name” more common?

But more important: My old list has a column that shows if the email address was confirmed or not (double opt in). Do I need this column in Mailchimp or is that information stored separately? The same question goes for the sign up date & time. And lastly my old list has a colum called “Group” where everything is set to “Public”. Does that correlate to different Lists in Mailchimp?

I tried it with a test sign up and it seems that the confirmation status and the sign up date are indeed stored separately, so do I only need columns for the first name and mail address (in it’s most basic version)?

The page I need help with: [log in to see the link]