Gmail Delegation that lets you merge multiple gmail accounts together. By doing this you can link your Gmail accounts to one primary account to avoid the hassle of logging in and out of Gmail every time you want to check a different inbox.
Sep 1 – Log in to the Gmail account you’d like to merge with your primary account. Click settings and choose the “Accounts and Import” tab. Then click “Add another account.”
Step 2 – A new window will pop up prompting you to enter the Gmail address you want to merge to. Enter your primary address, then click “Next Step.”
Step 3 – You’ll be taken to this confirmation window. Verify that you entered the correct e-mail address and click “Send email to grant access.”
Step 4 – Now log off Gmail and sign in again using your primary account. You’ll see this confirmation e-mail in your inbox. Open it.
Step 5 – Now click the link to accept access to your other Gmail account.
Step 6 – If all went well, you’ll be taken to this confirmation screen. Now wait for your accounts to sync. Google says this could take up to 30 minutes.