Can I still receive verification information after deleting WeChat friends?

I can't get it. If the other party sends you a message, the system will prompt him to add you as a friend and then send you a message. So he knows you deleted him. However, if you re-add him as a friend before he deletes you, you don't have to go through any verification. That is, if you delete a person casually now, and then add him back by searching his mobile phone number, Q number or micro signal, if you are still in his friend list, he won't know that you deleted him and added him again.