I am trying to find a solution to Migrate a small office of 5 mailboxes from an SBS 2003 server's Exchange to Outlook 365. I need a process to backup and restore all historical email data and to attempt to include shared calendars and contacts. Right now we are using both POP email and Exchange. A couple of years ago we decided to attempt to get rid of the SBS server completely as there are only 5 mailboxes, but we could not get around the shared calendar and ability to open up other users mailboxes if need be. So we have both POP and Exchange accounts on everyone's local Outlook client to be able to use both. Please provide a solution to migrating to Outlook 365 so that we can completely remove the old SBS server.