Is there a way to use several email addresses but all emails sent to them end up in one inbox? I have multiple sites but want to use one email from ym end but multiple from a users end. Hope that makes sense.
Create all your email adress. Then redirect all of them to the adress you want as main. As for redirection, im not sure how do you manage those email accounts, so it is hard to say how to redirect them.
do you want forward multiple gmail accounts to one account? Or do you want forward multiple other account to your gmail?
If you're forwarding from Gmail to another account, click the "settings" link in the top-right when logged into Gmail, then look under the "Forwarding and POP/IMAP" tab. It's pretty self explainitory from there. If you're forwarding from email addresses on other sites to a single Gmail account, you'll need to look for email forwarding settings in the mail section of those sites controll panels.