How to setup notification so user can continue filling Form 2 after Form 1?

Also, when the user fills in part 1 but not part 2 (the checkout stage), how can I setup a notfication so they can carry it on from where they left off? so all their form data is saved and they can resume and hopefully then checkout? 

Thanks!

Hello,

I have checked and reviewed the progress of your form; I noticed that on your thank you page, you are able to have set parameters to which the form will prepopulate the 2nd form. You can use the same URL and insert it to your email notification.  The variables on the email notification will be replaced with the actual values once it is set to the inbox.

if you have questions or need of assistance, please let us know.

Thanks.