oops, just posted exactly this same question in the programming forum. Are we talking about compiling our own php cgi here? That would allow 5.0.2, and I was mulling it, but, yeah, p2ranger, I was also kinda shocked to receive
[b]Fatal error:[/b] Call to undefined function: imap_open()
PHP does have to have the c-client library for imap functions to work, and I guess it's just not compiled in. Another option (besides compiling your own php cgi) is parsing the mailbox yourself, but that can be kind of a nightmare.
Well, I just wanted to stick my toe in this door. I'm still considering my options and using (yuk) squirelmail for the interrim.