I had 67 such emails overnight, last night.
Deal with them by pressing the delete button.
The few I get, I deal with by not opening, blocking sender and bouncing to sender, you then do not get any more from that source at least.
Never had any spam or junk mail until a little while ago, when someone I know, who is signed up with an online dating club, must have given it my details, since then I have had all sorts of junk.