Sending, receiving, and organizing email in Outlook.com
Hey there,
To give you the exact steps I need to know a little more about what you want to do since Outlook on the web does not have the exact same AutoArchive menu as the desktop program.
Are you trying to automatically move emails older than a certain date from your inbox to the archive folder on a regular basis? Or do you just want a quick way to manually sweep all the emails currently in your inbox into the archive folder right now?
It also helps to know if this is a personal account or a work account because corporate accounts often use specific retention tags and a dedicated online archive mailbox set up by an admin. Once I know what you are aiming for we can get it sorted out.