Hi. When I have opened / read messages my outlook inbox ,if  I press delete, instead of the messages moving to the deleted items folder they just disappear permanently.  It doesn't happen to unread / unopened messages - if I delete something from the inbox that I haven't looked at, that one will go into the deleted items folder.   I haven't got any message rules set up and the problem just started to happen by itself several weeks after I started using outlook (had previously used express).  Thanks for looking at this QUESTION and hope someone can help.The problem could be a setting in "auto archive", this can be found after
clicking on a folder
and then "Folder Properties"
 there is a setting here.
 On the folder properties window, CLICK on the "AutoArchive" tab
and check the option to "Archive this folder using these SETTINGS:".
Select a desired time period during which these emails will be stored on the Unwanted Emails folder (for example, one week),
then select the option to "Permanently delete old items".
As a result, these unwanted emails will be automatically erased by Outlook, after whichever setting is in place for example "a week " " 10 days" "a month "since they were received. it is not recommended for you not to delete the emails right after you received email, because it's always good to TAKE a brief look on these emails, in case a KNOWN sender sent you a message from an email address which is not listed on your Contacts Address Book.