Here are the three most probable reasons you got a spam email from a random dating site you never visited or signed up for: Spammers bought a mailing list that contained your email address. Another company shared your data to an affiliate company. Theres been a user data leak.

Why does my boyfriend get spam from dating sites?

If these emails are in his spam, most likely hes only been on another web site that is associated it, but if you open a spam message then they have your email account and you start getting emails from them.