Is there an email list signup form plugin, that has flexibility?

Hi

Is there a plugin that does what the Magic Action Box plugin does, with that level of flexibility to create, design and place signup forms throughout your site? https://wordpress.org/plugins/magic-action-box/

I've installed the Mailchimp integration plugin but it doesn't allow me to add signup forms other than via widgets with are very limited.

I want to place signup forms throughout my site (e.g. in the middle of pages) and control the positioning of the input fields (e.g. 2 fields on the same horizontal line - see screenshot) etc. and of course have full control of the design.

Am I missing something? Perhaps I've chosen the wrong plugin?

Thanks!