How to embed a popup box?

Hi Guys,

I looking for a app to use on my shopify account that gives you the option when signing up to our subscription emails/messages. 

As we have a lot of kids subscribing they only have a mobile number and not email addresses.

Do you guys have this option

You can customize Jotform to receive a mobile number field only without email address and embed it as a popup.

Check my sample site here http://shots.jotform.com/jed/forms/dicountpopup.html.

Reference guide: https://www.jotform.com/help/417-How-to-Add-a-Pop-Up-Modal-on-your-Form

I actually took the sample design from our template gallery here https://www.jotform.com/theme-store/.

If you want to automatically launch the popup on page load, you can follow this guide https://www.jotform.com/help/203-How-to-Auto-popup-a-Lightbox-Form.

I hope that helps. Let us know if you have any questions or if you need further assistance.