E-mail: Deleted and Junk E-mail Handling
Deleted Messages
When you delete an e-mail message, it is automatically placed into your Deleted Items folder, where it will remain for seven days. Once this period is over, Exchange automatically removes these "expired" items from your Deleted Items folder. After this happens, however, you have another seven-day period during which you can "recover deleted items" from Outlook using the steps outlined in the How to Recover a Deleted Item article posted at Microsoft TechNet. These two phases combine to give users a total of 14 days during which a message they may have deleted can be recovered. After the 14 days, the message is gone forever.
Junk E-mail
Exchange (and if you use it, the e-mail client Outlook) performs additional spam filtering and filters suspected messages into the Junk E-mail folder. Similar to the above two-phase deletion period described above, spam will be removed from the Junk E-mail folder 7 days after initial placement, after which it will be available via "recover deleted items" for an additional 7 days. After 14 days, the spam e-mail is gone forever.
