No specific info about version 4.0. Please visit the main page of SysTools MBOX Viewer Pro+ on Software Informer.
The application was created to allow you to read & open Outlook.pst files.
View multiple MBOX file emails and attachments without email client dependency.
SysTools MBOX Converter allows you to convert MBOX files into PST, EML or MSG.
SysTools MBOX to Outlook Converter is a MBOX file converter.
It facilitates email conversion from Lotus Notes NSF format to MBOX format.
Allows you to recover and convert inaccessible OST file to Outlook format.