Create a new Landing Page based Sign-up Unit

In Attentive, go to Sign-up Units, then click Create sign-up flow

In Create sign-up flow modal, select Build custom, then press Continue

Then, Name your sign-up flow and from Templates section, select Landing page, then press Create

Associate an offer, then press Schedule and activate

In Ready to activate? modal,Copy the landing page link, then select Activate now or Schedule and press Activate