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Best Answer: With the all-new Yahoo Mail, there is no option to import pst files. However, in the Yahoo Mail Classic the only thing you can import are contacts in the address books. Here are the steps to do import/export of contacts: 1. Choose a program to import contacts from: Yahoo! (.CSV file)
in the open category click import in the import and export wizard click import from another program or file and then click next click outlook data file pst and then click next type the path and the name of the pst file that you want to import or click browse to choose the file to importow to make a backup copy of a pst file close any messaging programs such as outlook microsoft exchange or microsoft windows messaging click start and then click run control panel opens note if you see the pick a category screen click user accounts and then go to step 3