Many of the online mortgage rate tools are really just lead generation sites, including some of the big name brand ones.
One wanted me to create an account, and I got about half way through (I stupidly gave my phone number) and then exited without creating account. I believe they had a sort of "enter email, next. enter phone, next" kind of page by page pattern.
Anyway, within an hour of exiting I was getting 3 phone calls per hour from mortgage companies soliciting me for business.
Edit: That got a lot of push back. I'm just saying, this is not the hill I'd die on. At best it would spare some small single digit percent of visitors 3 unwanted emails.
I think it's still a dark pattern to email someone who hasn't expressed interest in receiving those emails. There should at least be text informing you of that and giving a way to opt out up front.
Absolutely f*ing not. Not a small thing in any way. This is unethical and if I got an email from that company you can bet I'll push back.
We'll provide an unsubscribe link, I promise.
... But let's just record they clicked unsubscribe because that means they're engaged. I mean maybe they clicked in error? Let's ask them to confirm.
... But maybe they confirmed because they were confused and didn't understand the great value we provide.
We can beat around the bush our way to full-blown scammers all day.
Saving emails from a form NOT submitted is bullshit, and you know it. The user never intended to submit.
I think this is a pretty important thing to try and get right.
Most people. Because we have form autofill.