If you are looking for an MSG file Converter, Try
SysInfo MSG File Converter which allows users to convert MSG files containing emails and their attachments into other file formats and email clients like PST, PDF, EML, Yahoo Mail, Office 365, Outlook.com, IMAP, etc. If the MSG file is too large to convert, you can export it to multiple PST files with the help of the Split Resultant PST feature of the MSG File Converter. This tool is compatible with all versions of Windows OS.
For More :-
https://www.sysinfotools.com/msg-converter.php