CLICK HERE to update the e-mail address listed for your account.
For some interfaces this will not work. You can then go to the command line of your interface and type there 'showadmin'.
A list of currently online, active administrators will appear. Send one of them a tell. Example: tell Lisebeth Hello my email has changed. Can you help me?
Alternatively, you can send an e-mail to email@example.com requesting your address be updated. In many cases, you will be required to give a bit more info to confirm you are the actual account-holder.