Hi there,
I have setup a pop-up promotion to capture email addresses and offering a 20% discount
Firstly, is there a way to make sure that anyone who is already a subscriber / customers cannot use the same email address to get an offer?
Second, I want to send an email to the person with the same discount code they get on the screen during the sign-up process.
Not only is there not an option to add a discount code to the email body. But there isn't a way to make sure its the same code.
Here is the flow I am using

Third, I receive an email asking me if I wanted to subscribe to this list - where did the email come from? Is this a Shopify thing or a Klaviyo thing? How do I turn it off?

Thanks in advance for your help