Call recording feature to be available with Gmail? This isn't officially launched yet however, sources do point to this feature currently being tested. If all goes well during the testing period, recording should be made available to all users who have the call phone option enabled in Gmail.

Call recording in Gmail is quite similar to the same feature in Google Voice.

"In order to record your call, simply press 4. You can do it when you first accept a call, or any time after it's started. To stop the recording, press 4 again or hang up. Your recordings are saved online and you can access them just like you do with voicemail." Instead of pressing 4, you click the record button.

[via Google Operating System]