If you want to break pst file of any size into smalle files. no need to worry about that simply use split pst  tool. this tool works with active pst file and archive Pst file.

OST Recovery utility creates an instant preview or report of all the components of OST files such as Tasks, Emails, Notes, Contacts, Journals, Calendars, etc. with the count of the items. It shows the emails in normal view along with the associated attachments.

DBX converter tool can store and convert the Outlook Express DBX files to PST, EML, MSG file format. Moreover, DBX converter import the consequent files into their supporting application.  For e.g. EML files can be run on Thunderbird, Outlook, Windows Live Mail and PST file can be run on Microsoft Outlook.

Outlook recovery software is able to recover damaged PST files after performing a fast scan on them. After scan, files are trailered in a list but if the outlook files are gravely damaged then, user should opt for the Advanced Scan mode option.

The Outlook Express DBX files to PST exporter processes a rapid conversion because it is inbuilt with lowest footprint of EXE files, which contributes a lot to test the product with its ultra fast speed.

User can import PST file to Office 365 User account in a single run. User can also upload several folders of PST file to Office 365 with no size limit.

If user want to bulk import vCard contacts into an orphan PST file, accessible on your system, then this choice is helpful for you. Just give the location of desired PST file in which you want to save a contacts as a vCard to Outlook 2007/2010.