If you want to import OST files to PST format without data loss, you can should be use OST to PST converter from KDETools software which smoothly works to convert OST to PST Outlook format and also gives many key-features for migration Emails, mails and etc. database. You can use this software even if the OST files are damaged. It is an easy-to-use application that requires no prior technical knowledge. Any technical or non-technical user can use this software with ease. This software easily export OST to PST, including 14 plus formats like- PST, Zimbra, Gmail, vCard, ICS, office MSG, EML, EMLX, MBOX, PDF, NSF, and etc. file formats.
1- Converts large OST file to PST - No file size limitation.
2- Converts encrypted OST into PST. Also converts IMAP OST file.
3- Exports mailbox data from OST to Office 365 & Live Exchange (Technician Edition).
OST to PST converter