Our drag & drop editor enables you to optimize your campaign for mobiles from the Styles > Mobile display area. However, the options available depend on your campaign being built in a compatible way.
Starting from scratch
The simplest way to ensure the mobile options in drag & drop editor show is to start with one of our free templates. Go to Campaigns > New campaign > Free template and choose a template that's marked with the mobile phone icon. To start completely from scratch, you can also pick one of the blank templates.