SysTools OST to PST converter is the Windows and Mac OS based software. It allows users to Convert Microsoft Outlook OST file into PST file format. Along with this this OST to PST converter is capable to export OST files into multiple format like: MBOX, MSG, EML, EMLX, NSF, PDF, TXT, HTML, CSV, MHT, DOCX, DOC, RTF. The OST to PST converter is compatible with Windows 11 and all below versions. It also allows users to convert any size OST file into PST and other file formats. It allows to export OST file contacts into vCard and Calendars into ICS file format. Apart from this the software ensures to maintain folder order and data integrity. SysTools OST to PST converter allows users to add either single or multiple OST files using Add File or Add Folder option respectively. Added OST file will be scanned by the software and provide a preview of all items of OST file. After that user can proceed to conversion process of OST to PST format. The software is capable to convert OST file generated by Microsoft Exchange Server, Hotmail, IMAP configuration. It also remove SMIME and OpenPGP from OST file and then export it to PST or other format. SysTools OST to PST converter will allow users to access OST file even without Exchange profile and server connectivity.