Why do you want to add my name after sending a message? What's the special meaning?

This is very important for strangers, and of course it is also very important for acquaintances, especially some short messages of blessing. Some people ignore the signature and feel very warm and uncomfortable after posting it. I wonder who is blessing. Whether it is a blessing message or an ordinary contact information, the signature is to let the other party know who you are talking to. Of course, you already have this person's number in your address book, so you can know who it is directly, so there are still many friends who don't know who it is, which is sometimes embarrassing.