What is snapchat typing notification?

Snapchat typing notification is a feature that allows you to see when the person you're communicating with on Snapchat is typing a message. When the other person starts to type a message, you will see three dots appear below their username in the chat window. This notification lets you know that the other person is in the process of responding to your message, even if they haven't sent it yet. It's a helpful feature for knowing when to expect a response, and it can also reduce any anxiety or uncertainty while waiting for a reply.