Move emails from two emails users/accounts into a single email account

Hi,

With the help of Cpanel Forum, I was able to move emails from one user ([email protected]) to another user ([email protected]).

Now, I need to move/merge email accounts of 2 users ([email protected] and [email protected]) into another email account ([email protected]). That way, [email protected] can still check/read previous emails sent to [email protected] and [email protected]

How can I do this?

Thanks in advance.

 

I did what is stated on this link and it worked:
http://forums.cpanel.net/f43/how-move-mails-another-email-account-same-cpanel-195971.html

Should I just copy the contents of cur and new folders of email users ([email protected] and [email protected]) and paste it inside cur and new folders of user [email protected]?

This will not overwrite anything, right?