You can also disable the chat function completely if you do not wish to have it operational when you are checking your email from the Web interface. To view Gmail without the chat function turned on, click the Turn off Chat link at the bottom of any Gmail window. This will sign you out of chat and your chat list will be minimized. When you wish to turn chat back on, click the Standard or Turn on Chat links.
You can also reply to an email by initiating a Gmail chat. Use the following steps to reply by chat:
1. Log into your Gmail account.
2. Make sure the sender of the email is available to chat by finding them in your contacts list and checking for the green button next to their name.
3. Open the message that you wish to chat with the sender about.
4. Click the Reply by Chat link at the bottom of the email.
5. The Gmail chat window appears and you can begin your conversation.
To leave a chat, click on the X in the upper right corner of the chat window. This closes the chat. If Chat History is enabled, any chat that you have will be saved in transcript form in the Chats section of Gmail. When you reply to a message by chat, the chat transcript will be grouped with that email, making it easier to locate if needed in the future.