snakesboy wrote:

If a mailbox account only forward a mail to other mail account ,i have
set a rule in outlook and set not keep copy

but it only send it to delete item but not permanently del it ,delete
item also become more and more big

How can i auto delete if i will not open the outlook ,where can set in
cleint side .

If it's a mailbox account, then why are you not performing the action on the
server so no client need be involved at all? If you must use Outlook, use
the "permanently delete it" action instead of the "delete it" action. Those
two actions should have been right next to each other in the list.
--
Brian Tillman