In this time backup is very important especially for a business user who has an important database of their clients and its personal details also whom the user does not want to lose at any cost. User can save Yahoo emails to several file formats PST, EML, MSG, and MBOX formats With this GainTools Cloud Backup Software this is a smart utility that allows you to convert Yahoo emails to the multiple file formats. It allows you to transfer your complete Yahoo mails, contacts, calendar data, etc. to any webmail. You can also try the free trail version of this tool.