OptinPop comes in two flavors free and advanced. They are not very different. OptinPop free will probably satisfy the needs of most marketers. However, the advanced version has one significant feature over free, which is serving different popup content to split test or display offers in a logical sequence each time the visitor lands on your website.
Ease of use
OptinPop is a WordPress plugin, but it requires you create external .html files. The HTML files are the content of the popup window.
Here’s the settings page of OptinPop free:

OptinPop popup windows look like this:

What can you display in the popup?
OptinPop grabs whatever is on a specified .html file and displays it on the popup. You can embed anything–an opt-in form of your favorite email marketing service provider, an announcement, video, image, whatever.
Styling, placement, and visual effects?
You can style the content in with CSS, but you can’t change the frame of the popup window itself.
OptinPop free gives you two choices for placement: center top and center middle. That’s it. The advanced version has more options.
You have the option to display a Lightbox or not. The color of the lightbox is black in the free version. The advanced version gives you more options. This is the only visual effect supported by OptinPop–no fade-in or slide in effects.
Supported types of popups and unblockability
OptinPop’s uses the most popular type of popups–JavaScript popin (also known as popover). This type of popup can’t be caught by popup blockers.
You can delay the appearance of the popup by a number of seconds.
OptinPop doesn’t support popunders or exit popups.
Pricing, licensing, and refund policy
The free version is free but you’ll have to give your email address to the plugin’s author. The advanced version costs $47 but it is backed by a crazy refund and usage policy. You can install the plugin on any website you can access. And if you needed your money back within the first 365 days of buying the plugin, ask for it–you’ll unconditionally get it back.




