You can now edit and add tags to contact via inbox.

In each chat, simply click on the leads' profile. A side bar will appear on the right, and you can add tags to the lead. This lets you categorize leads into different groups for easier accesss in future.

Here's a new feature that's going to make it even easier to keep track of your leads and customers - Tagging In Inbox

You can now easily edit and add tags to your contacts via the inbox chat. Simply click on the lead's profile in the chat, and a sidebar will appear on the right where you can add tags to the lead. This allows you to categorize your leads into different groups for easier access in the future.