Several things (I’m an ESP, so this is something we spend a lot of time thinking about):
• The low quality of leads is definitely an issue, but that’s the least of your legal problems
• This is a clear violation of CAN-SPAM. They did not consent to marketing emails (which is separate from a privacy policy), and this is required for sending ANY promotional emails at all
• Abandoned cart emails fall under “prior business relationship” and thus, get transactional status for one email only. (Courts agree on this, beyond that it’s promotional) What you’re doing here has no prior business relationship and is just plain unethical and illegal depending on the country you live in.
This is not a practice I would endorse or recommend to anyone trying to build a serious list. If this is your best effort to get customers, you’ve got some more work to do. 😎