Animail

I'm using Animail to download mail from a POP3 server
and save it to a local mailbox file.

Regardless of whether "KeepOnServer:" is set to "Yes"
or "No", it does not delete the e-mails it downloads.
Thus, everytime I run Animail, it downloads the same
e-mails again.
I even tried "MantenerEnServidor:No"! ;-)

My .animailrc:
Pop3Server:pop3.isp.net
MantenerEnServidor:No
Protocol:POP3
UserName:abc
Password:password
MboxFile:/var/spool/mail/abc
DownloadOrder:Arrival

Any ideas?

Thanks,
Brad