How can user save chat in his email?

My query is how user can save his/her chat history in their email from the chat window before finish his/her chat?

Live Chat PRO plugin version allows to use the function “Offer to send chat history to the email”.

Here are the steps how to make it work:

1) Login into your admin area at www.wp-chat.com

2) Move to “Settings”.

3) Check the setting “Offer to send chat history to the email”.

After that when the user ends the chat, he/she will be asked if he/she wants to send chat history to the email

Once the chat history has been sent to the given email address, he / she will see it this way: