Try Mac OST Converter that allows to open OST file in Mac Mail with emails and attachments. The Mac OST Converter is a simple technique which is easy to use and possesses simplified environment. Any user can effectively handle the application and open OST file in Mac Mail by converting OST mailboxes to MBOX. The Mac OST Converter utility has numerous beneficial features that users can use as per need to open OST file in Mac Mail. Download the trial edition and test the process to open OST file in Mac Mail by converting first 25 files from each OST folder to MBOX for free.