MBOX to Outlook 2016/2019 is not officially supported. MBOX may be a generic file supported by many clients, but Outlook 2016/2019 in Mac cannot use it. It can only either use OLM or PST. And the Windows’ version can only use PST for importing the data.
Features that makes Mail Extractor Pro is best tool to Convert Mac Mail to PST.
In a forever going race to be the best Mac Mail to PST Conversion, Mail Extractor Pro leads the way. The tool is fully equipped with all the latest top of the line features that make the process of Converting Mac Mail to PST a cakewalk.
When you have to convert your Apple emails into Outlook it is but obvious that you would be looking for the best MBOX to PST converter tool. It is not quite easy to find a MBOX to PST converter tool that can offer you all that you are looking for.