that means that outlook is useless as an Imap client then . This is
the whole idea behind
imap, to be able to do work while off-line and sync changes when
on-line or I get it wrong ?
I would see it a bit more general: Outlook is mostly useless as email
client in general (not looking at the groupware functionality). Even
with Exchange or other server types, many simple things do not work
reliably and never get fixed.
And the simplest things are impossible, e.g. displaying the full email
address of a sender instead of the name only (to make it harder to spoof
senders). I suspect 2016 is the 2nd-last version of Outlook to be
released and from then on it will be browser-only.
That said, IMAP support is "strange" and has always been - OL trusts its
own .ps ort .ost file more than the server which circumvents the general
idea of IMAP. If you need Outlook, avoid IMAP and if you need IMAP,