Kernel for MBOX to PST software proficiently converts MBOX emails to Outlook PST format. The software accurately converts all MBOX items like emails, attachments, contacts etc. into PST format. The software is capable of converting multiple MBOX files simultaneously. The software efficiently performs conversion of MBOX files created in 20 MBOX email clients including AppleMail, Thunderbird, Opera, PocoMail, Gnu, etc. into Outlook PST format.