I've been a member since 2010 and need to change my mail address as it forms part of my login. I would like to retain my current account as there is a lot of info.

Send a PM to
test
Include your old email address as well as the new one. I'm not sure I understand the need to change it -- most only change the email address if they close an email account.
If you want to change your user name instead, just send her an email concerning that.

I would write a PM to one of the moderators