Can I change the E-mail address to another on a xbox account? If so how?

Hello, there's no way to delete a gamertag, the only thing you can do is change the e-mail on the gamertag to another e-mail. So what you'll have to do is change the e-mail on this account so the e-mail address is free to use on another account. To get instructions
on how to do this you can follow the directions on this page:
support.xbox.com/.../manage-live-id.aspx.

Hi,

Yes you can but you must own a 360 to do it:

• Move your Xbox Live profile to another Microsoft account on Xbox 360
  

Start by changing the e-mail on your old account to a different e-mail address. That will free up the e-mail address from the old account so that it can be used on your new account.

to change your microsoft account you need to know your account password then go to setings>account>account security and change microsoft account. This will not work if you have outdated security info or if you have made any changes to your account info in
the last 30 days. also if you're moving to a g-mail or another accout that is not hotmail live or outlook the e-mail has to be registered at login.live.com click on sign up and register the e-mail address as a microsoft account. If you need to register your
e-mail address do not make the mistake of going to xbox .com this will automatically assign a gamertag to your e-mail address. the new e-mail address cannot have a gamertag on it. if it has you need to transfer that gt onto another e-mail address and wait
30 days for that e-mail address to become free.

You are unable to have more than one Gamertag per E-mail address, to make an alternate account, you would have to use a second E-mail address.

If you wish to change your gamertag, you can do so whilst keeping the same E-mail address. This will cost you 800MSP and can be done from your console, see here for more details:

support.xbox.com/.../change-gamertag