Archive mailboxes are secondary mailboxes that are associated with a user. Archive mailboxes are typically used to manage email storage limits. For example, older email items might periodically be moved from the Inbox folder to the archive mailbox.
This protocol provides operations to archive a set of mail items from a primary mailbox. Archiving items in the Inbox folder in this way preserves the folder hierarchy of the items. In addition, archive mailboxes can be stored either locally on a client or remotely, in a way that is mostly opaque to a user, by using a folder path to point to the contents of the archive.