There are times when you may want to see some previous chat history with a google contact, By default when ever you chat with any google talk buddy or gmail contact it gets automatically logged as chat history. So you can read all the previous chat history happened with any one in gmail inbox under Chats label as shown in the image below.
In order to view the chat records of a specific contact email id, you can either search with the keyword syntax [ chat email id ] without square brackets. For example – chat firstname.lastname@example.org
Or you can also use google talk also to do the same for any google talk buddy you chat with, click the buddy for which you want to see the chat history as shown in the image below.
Once you click this option to view the past chats – all the previous chats will open up in new window in your default internet browser.