There are a lot of different ways to backup and restore messages in Microsoft Outlook. One of them is to export and import .PST file. PST stands for Personal STorage. Actually it's a database, that contains your mail, calendar, contacts and other stuff. It is useful to work with .pst files when you want to transfer your messages from one PC to another or if you just want to back up them. Following instructions will tell you hove to use .pst file, that was once created.

1. Open Outlook.
2. On the File menu, click Import And Export. If the command is not available, rest the pointer over the chevrons at the bottom of the menu, and then click Import and Export.

3. Click Import from another program or file, and then click Next.

4. Click Personal Folder File (.pst), and then click Next.

5. Type the path and the name of the .pst file that you want to import, and then click Next.

6. Select the folder that you want to import. To import everything in the .pst file, select the top of the hierarchy.

7. Click Finish.