Blackmailing a person on WeChat will not receive the message from the other party, and you can view the personalized signature through the blacklist. If deleted, this person's information will disappear.
After Wechat is deleted, the chat content of the other party will be labeled with a red exclamation mark: the message has been sent, but it has been rejected by the other party, and "Send friends for verification" will be displayed, and friends need to be added again.