Here you can use MailsSoftware OST to PST Converter tool to move single or multiple OST file to Outlook PST format with all attachments. This GUI application tool has various advanced features that helps each level of user to export OST file to PST.
With the solution, user can also recover corrupted, damaged and inaccessible OST file to PST file format.

Opera Mail provides data in MBS file format that user cannot open into Microsoft Outlook platform. So i would like to suggest MailsDaddy Opera mail converter tool. The application supports all MBOX, MBS and MBX based email clients including opera mail. The software maintain initial folder hierarchy, header, inline images, attachments etc. during the whole migration and allows user to move MBOX file to Outlook PST.

SysBud NSF to PST Converter tool is the best solution to move NSF to PST, Office 365, EML, MSG and various other file format. It has several conversion format that helps each level of user to open Lotus Notes NSF file to Outlook and various other file format. You can also keeps all data items like email, contact, calendar, task and various other file format.