Conversion of OST to PST can be easily done by using professional software like MailsDaddy OST to PST Converter. This software has clean user interface that is easy to understand, it is fast and it is a reliable software as well. While the conversion can be made manually as well but it is highly recommended to use a professional software because this software does not require technical knowledge for operating it, also when large files need to be converted, this software comes handy as it can handle large data files with ease. MailsDaddy OST to PST Converter preserves folder structure, read/unread status and all mail formatting and flags as well. It also offers the option to migrate OST files to Office 365, live Exchange, MSG, EML and MBOX formats.