Option to leave mail on POP server for some days.

[r.schreurs]

I use my Bubba TWO to store my e-mail on the IMAP server. The mail is retrieved by Bubba from several POP3 accounts. I have once choice: "Leave email copy on server", yes/no

If I look at the Thunderbird e-mail client, I can specify the number of days to leave the mail on the server. I would find this useful, because I do not allow WAN access to the mail on the Bubba. I could check e-mail on the POP3 servers from other locations than home.