Are there any GUI mail clients that read Linux/Unix mailbox file mail delivery? I use mutt for most of my mail reading but now that I can do all my mail reading on my home machine it would occasionally be useful to read my mail with a GUI mail reader (e.g. for the very occasional HTML mail that says something useful with the HTML, and/or to look at attached pictures).
All the GUI clients I have tried in days gone by have assumed mail comes from a POP3 server and/or munge the local mail spool with specialised indexes etc. that break it for other (better behaved) clients.
It doesn't even have to be a Linux program as my Win2k machine has access to the mail on the Linux box.