Can I use Leadpages to publish pages to my existing site?

In most cases, yes. Landing pages built with Leadpages can be published to a subdomain of your existing site (sub.yourdomain.com), or within a WordPress site using our free plugin. Pop-ups and alert bars built with Leadpages can be added to practically any site — as long as you have the ability of pasting HTML code (including javascript) into an existing page. We have full documentation about publishing here: https://support.leadpages.com/hc/en-us/categories/360000604092