Suggested your scope of responsibilities includes replying to certain requests from customers or partners, or supervising interns dealing with correspondence, or finding relevant materials in the corporate mail flow for other purposes, you probably use Public Folders on your Exchange Server quite often. In essence and architecture, Public Folders in Exchange 2013 are very much resemblant to mailboxes with shared access. They are frequently used by workgroups or entire organizations as an efficient way of collecting, sharing and organizing information, including, above all, incoming correspondence. If a public folder has been mail-enabled and included in a distribution list, a copy of a message sent to this DL is added to the folder as well, so public folders can also be used for archiving purposes within a workgroup. All you need in order to view and access items in a public folder is your Outlook client.
