Maybe I am misunderstanding something. With a POP3 it would recognized the email account. If there is more than 1 email address pointing to that 1 POP3 account, I do not believe Smarter Mail would be able to distribute them to different email accounts within Smarter Mail.
As far as I know the POP3 is a one account to one account type of retrieval service. Which should not involve a catchall, unless you have a POP3 that is a catchall and then it would be able to retrieve that 1 account into 1 Smarter Mail account.
If there is anyone else that knows of a different way to accomplish POP3 retrieval please chime in.
Thanks,
Jerry