You can select the position of your pop up. It lets you use a split test on your popups and tells you every detail about them to help you monitor which popup is working and which ones should be removed. Some of its opt-in forms include popup lightbox, sticky ribbon, in line popup, content lock popup and much more to help build your email list faster. The plugin can be purchased for as low as $67 for a lifetime with one year support.
Ask your developers or whoever has access to your hosting provider’s site to add a CNAME (custom domain name) record to your site. This is a one-time setup for each subdomain. For example if you have for a landing page, and then you want to set up another one called, you’ll need a new record for each of those pages (one for “buy” and one for “sell”)
The number of templates and features are huge. Through them, you can create unlimited landing pages according to your needs.  there is a feature available on Unbounce from which you can manage multiple clients through a single account which is really cool. The loading time to load your pages can be reduced 99.99% through Unbounce which means your landing pages will load instantly.
Overview  Leadpages was introduced in 2012. Leadpages essentially provides a straightforward, user-friendly framework for building and customizing stylish landing pages.  Leadpages offers a non-coding graphical editor. Leadpages allows users to integrate payments with their landing pages.  Unbounce was introduced in 2009 to help marketers with the conversion.  Apart from a drag-and-drop landing page builder, Unbounce comes with specialized on-site tools for conversion.  
Hey Martin, Yes Instapage is really good alternative to Leadpages. A/B test of landing pages are required, when a marketer need to test and optimize the performance of their existing lading page. Using A/B split test; they can change and optimize different elements of landing pages and see how the changes can impact their conversion to get high return.