BitVare Mac MBOX Converter tool is designed with features. The BitVare MBOX Converter support to convert MBOX mailboxes of 10+ email applications on Mac such as Mac Mail, Entourage, Gmail, Thunderbird, SpiceBird, Eudora, PowerMail, etc.
This software was checked for viruses and was found to be clean. Click here to see antivirus report.
I used this tool to convert my 1800+ MBOX emails of my Mac machine to Office 365 environment. Software works perfectly to convert mails with no data loss till yet.