If you are looking for the best PST Migration tool then you must try the MacProTools Mac PST Converter. It allows you to migrate single and multiple PST files simultaneously. Using its Date Selective Email Conversion feature you can convert the selective time duration and migrate PST file data ranging between selected dates. The PST Converter gives access to backup or migrate the PST files with or without the attachments. You don't have to worry about data alteration when you back up the PST files with or without attachments.