Archive mailboxes provide additional email storage for the people in your organization. Using Outlook or Outlook Web App, ...

Archive mailboxes provide additional email storage for the people in your organization. Using Outlook or Outlook Web App, people can view messages in their archive mailbox and move or copy messages between their primary and archive mailboxes. After an archive mailbox is enabled, messages older than two years are automatically moved to the archive mailbox by the default retention policy that's assigned to every mailbox in your organization.