There are many ways to back up emails or data of MS Outlook like manually copying the Outlook file or relocating the entire Outlook file. Importing and exporting the mail folders to any designated location is also useful. Personal Folders Backup is also an automatic process, which creates backup copies of the PST files at regular intervals and saves them to a designated location. Going for a third party software is also a popular option. In fact, it is warranted in situations where the user has to deal with multiple clients.