Think he realizes that

(I was just helping him fully understand it wasn't ZD's fault - education purposes.) IMAP is 'turned on' in his settings, but there's clearly a disconnect between the value in config UI and actual used attribute somewhere within gmail. (You'll have to find the contact option deep within
google help.)
To answer your earlier question drdrem: *nix = Unix-like names such as AIX, HP-UX, IRIX, Linux, Minix, Ultrix, and Xenix. Of course these patterns do not literally match many system names, but are still generally recognized to refer to any UNIX descendant system, even those with completely dissimilar names such as Solaris, FreeBSD or Mac OS X.
Actually I just didn't take the time to fully elaborate before - there plenty of ways to run a similar command from windows & there are OpenSSL versions for it too:
OpenSSL: OpenSSL Binary Distributions >
Shining Light Productions - Win32 OpenSSL
Originally we prevented POP for Ymail or gmail because that implementation would 'lockup' the mailbox for the entire POP session - which can last a long time during initial sync, we also didn't have a good backup method then (we do now, you can read about the tar formatter here
ZCS-to-ZCS Migrations » Zimbra :: Blog) to that end we also previously had the 'remove from server' disabled for POP.