PPCMCheck will let you query any pop mail server where you have an account and see what messages you have without having to download them into the default Pocket PC version of Outlook.

You can preview the messages in ASCII text form (thus you can't download a virus) and get all the pertinent data as to when, where from, how big, etc.

You can also delete messages from the pop3 server and get rid of all the spam and/or viruses before downloading the messages you really want to keep with your main client software.

PPCMCheck can handle up to 10 different pop3 mail servers and keep their log in info/passwords.