The URL Trigger in Divi Overlays allows you to “link” directly to your overlay/popup from an external page. For example, say you have a contact form within a Divi Overlay popup. You could put a “Get in Touch” link on your Facebook Profile with a link to your website + the URL Trigger and it will autmatically trigger the contact form popup when the user clicks the link and lands on your website.
Here’s what the URL Trigger looks like:
(in the above example, 123 is the overlay ID).
The below link will automatically trigger the Popup Video on the Divi Life All Access Page:
And this link will automatically trigger the Contact Form on the Divi Overlays Product page.
Other Automatic Triggers
I highly recommend Divi Overlays to novice users and pros. It is easy to use and works with the Divi Builder and is a great alternative to traditional modals. However, the top reasons I recommend this plugin are the support and ongoing development. Support is fast and personable, which can be important when working on a deadline. The developers have updated the plugin with some great additional functionality, and they welcome suggestions from users.