Logged In: YES
user_id=476981

When we receive the list of subscribed folders then we do a
LIST call for every folder in order to make sure the folder
exists. If it doesn't we internally mark the folder as
NoSelect to achieve it cannot be selected (selected in a way
of clicking on it in left_main or showing up in a dropdown
list).

If after the caching of the folder list a folder becomes
unavailable then we should mark the folder as NoSelect again
and not try to create it because there can be more reasons
for a non existent folder then the folder is deleted by
another imap session. I.e. a nfs mount containing the folder
is temporary unavailable.

So asking the user to create the folder is not always a good
idea I think. Maybe it can be a good idea if there there is
a server response [TRYCREATE] but i'm not sure if such
response is given in case of temporary unavailable mailboxes.