How to Enable Text Messaging in Gmail Chat

1. Sign into your Gmail account.
2. Click on 'Settings' in the upper right corner of the page then click on 'Labs.'
3. Scroll down the page until you find 'Text Messaging (SMS) in Chat.' Select 'Enable.'
4. Click on 'Inbox' at the top of the page to go back to your Gmail page.
5. Type the phone number of the person you want to text in the blank under 'Chat.' To the right of the phone number, select 'Send SMS.' Type your text message into the window that pops up in the bottom right corner. Click 'Enter' to send the text. The person you texted can text you back and you will see their response in the same window.