It would be a real pity to let go of an old account with all of its stuff :/ well if you have the link for the old account page why not tell a mod to change its E-mail to your current one? There's always a solution! :D
OR you can just post a message in the new users' hangout saying that you're kinda new but your old account & E-mail are inaccessible and stuff, maybe a mod will read the message & help you! :)