Qmail as a Pop3? Or I better use qpopper?

Hi all, After having asked for your MTA, I decided to go with Qmail. Now my question is: what Pop server? I see that qmail also offer a pop server, but after having read the docs I wonder how the password is sent over the network. I do not see anything about this, except how qmail authenticates the users, so I suppose it pass the password in plain text. Am I wrong here? Praise