Launch builder - no theme

I notice that when I am creating a campaign email template that the “Launch Builder” button doesn’t appear when Theme is set to None. I only get the launch builder button if I select one of the themes. Is this the intent when you have no theme?

I notice that when I am creating a campaign email template that the “Launch Builder” button doesn’t appear when Theme is set to None. I only get the launch builder button if I select one of the themes. Is this the intent when you have no theme?

When Theme is set to “none” you can just edit the existing email fields. Builder is only used for themed emails.

With Theme set to “none”, I do not get an option to insert Contact Fields as I do with the builder function. I want to send an email to a targeted set of contacts in a Segment that I have created for that purpose. I want to use a few contact fields, such as first name, to personalize the message.