Hi Renate,
If you have 2 accounts with us and wish to receive all emails into one email account you must try to forward one of the email accounts emails to the other one, does it makes sense?
there is no way for our system to do that.
If you tell me what email systems (hotmail, gmail..etc) you are using I can tell you how to set it up.
P.S: Not all email systems offer the forwarding feature, most major ones do.

I forward all my accounts to one account and I love it.
hope that helped.
thanks