You're gonna be shocked how many input fields do this for various UX features :)
They require your full address to show you shipping prices as well (vs just letting you estimate with country and postal code alone), so I have to punch in a ton of details before I nope out at awful shipping costs, and I end up with these emails.
You're probably getting the "abandon cart" emails, which is legally considered a "transactional email", and doesn't require consent.
Either way, if I enter my e-mail, decide "nah" and quit, that should be that. It shouldn't be sending my details in the background
I use this Shopify feature as a buyer to get discount codes, as abandoned cart emails often come with them.
Edit: accidantlay -> accidentally