I didn’t ask. That means it’s spam.
Simple as that.
You’re not special. You hate it when people add you to to their spam list. So why would you add “just a few people you think are interested.”
Even if they are, they now think you’re an idiot or an ass because you think you get some exemption to the spam rule.
Guaranteed way to lose a customer and a friend.
(In case you’re still not clear, the only correct way to add someone to your email list is if they — not you — voluntarily check a box that says “add me to your email list” and click “submit.”)