problem analysis:

First, if the mail on the user's mail server is not deleted first, then Outlook will reset the mail account information and receive the mail again.

Second, if the mail server mail has been deleted, reinstall the system before the mail backup, you can restore the following steps:

1, start Outlook (premise has set up a good mail account, this is not in the repeat);

2, Click the File tab, click Open, click Import;

3, click to import from another program or file;

4, click on the best outlook backup software free data file, click Next

5, click Browse, select the pst file to restore, click Next;

6, click to finish.

Third, if the mail server has been deleted, and no backup, then can not be restored.
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