Hold and give it a trial if you are in search of a converting tool which can help you in converting your MBOX emails to PST format. It will perfectly save your desired MBOX files in PST format and with attachments. It will not affect the mail formatting of your mails and also with extra benefit it will ask you for the naming format the way you want to name your PST files. It will also keep Meta data format of your mails. Apple Mail Import PST software is maintains all the folder structure during the whole conversion process without changes and data loss.