Question about importing mail from one of my g-mail email addresses to another?

So let’s say I have 1 email address that’s email1@gmail.com and I also have another one that’s email2@gmail.com, and I use #1 almost all the time, but I’d like to be able to give out email2 and have those emails also be delivered straight to me email1 inbox.

In my email1 inbox, when I go into “Accounts and Import” and click on “Import mail and contacts:” a new window pops up that says:

Enter the mail settings for email2@gmail.com.
Email address: email2@gmail.com

Username: email1
Password: (I type in my password)
POP Server: smtp@gmail.com
Port: 995

Then I get this error:

Server denied POP3 access for the given username and password.

Show error details Server returned error: “Unable to process the account info.”

I’ve read this a hundred times and I can’t make sense of it: http://mail.google.com/support/bin/answer.py?hl=en&answer=13287&ctx=cb&src=cb&cbid=-1kj6lp2xdobiw&cbrank=5

Can anyone help please? What am I doing wrong?