Type your destiation gmail account on the email address line.
Then click the blue button for "SEND CODE"
Open the destination email and open the "Verify your account" email that was just sent to you
Select "Get confirmation code"
WRITE THIS CODE DOWN, you will need it in a future step
Click Continue
Enter the code in the space provided
Click "VERIFY"
Select Drive and/or Gmail to copy
Select "START TRANSFER"