So many times we need to introduce offers or statement or something to our website visitors, the most famous way to do that is to integrate the page-load-popup on the site,
Let me give you few of my recommendation which helps you to integrate page-load-popup easily to you any WordPress site.
Think about the requirement, We are here taking the example of general popup what can demonstrate our new product line, so whenever new visitors comes to the site, they can see our newest product which you would have launched.
Try this Plugin which has:
Uji Popup is a WordPress popup plugin which allows you to convert visitors on your site/blog into taking an action whether it’s advertise, subscribing to your newsletter, offering a discount or coupon. The popup messages are displayed as soon as the visitors opens the page. Shows dynamically when a visitor goes to close your website.
Few important features that we feel its important:
It covers mostly your requirements,,, you can visit Uji official plugin page at: https://wordpress.org/plugins/uji-popup/