As an MBOX to PST Converter, I want to recommend one of the most trusted tool is MacSonik MBOX to PST Converter for Mac. The software can export MBOX files into multiple email clients such as Gmail, Office 365, Yahoo Mail, Hotmail, iCloud, Thunderbird, AOL Mail, Amazon WorkMail, etc. on macOS. Using this tool, you can remove duplicate emails from the selected MBOX files. Furthermore, it Supports all types of MBOX files such as MBX, MBS, and MSF.