Thanks, Stephen. By binary chop process of elimination, I've found that it was objecting to the word w-get (without the dash).
BTW, what is the status of SocketPermission? I can't say that I've looked into it but the .NET classes that use it are probably no more dangerous than aspsock.
Here's my reply.
I think the easiest and probably only practical way on a shared host is to have some sort of regular repeating task that reads a mailbox and then does whatever it wants. I'm doing this on a Linux VPS with cron running w-get which hits a url which is a php script that reads a pop mailbox using the php imap extensions.
Php imap extensions are not installed on my Windows accounts at Jodo. I'm not sure about Linux. I see that the Windows accounts have a component called ASPPOP3 which could probably be used with some classic ASP. There are various libraries for ASP.NET for reading pop although you might run into problems because they would need SocketPermission and that doesn't come by default with medium trust.
Once you have a way of reading the mailbox, you'd need a way to hit the page at regular intervals, perhaps every 10 minutes so. I don't think you get scheduled jobs on Windows at Jodo so you'd need another way. If you or a friend had a Linux account you could hit it from there.
Cheers
Ross