If you have archived an e-mail in Lotus Notes, and you wish to unarchive it, it means you would like to put that particular e-mail back into your inbox so you can access it. This is an easy process; archiving and unarchiving e-mails is one of the basic functions of Lotus Notes and users often do this several times per day.
Open Lotus Notes and click on "Archived Emails."
Click on the box next to the e-mails you would like to unarchive.
Click "return to inbox." The e-mails will become unarchived and return to the inbox.