So, it appears that my mysterious inability to send email from my desktop computer using OWA via Chrome was solved by disabling the Skype extension. Magically OWA send works instantly. I also tried turning off my only other extension, Google Voice, but that wasn't the culprit. Anyway, hope this helps someone else as it was a monster pain for me to have to use Internet Exploder just for OWA as it's such a monstrously bloated piece of code. Thus why I don't have lots of extensions. ;-)