OSForensics™ currently supports exporting webmail to MBOX format from Google Gmail and Microsoft Hotmail/Outlook accounts.
When adding a cloud mail source, the user will be required to acknowledge authorization to access the remote mailbox and will be prompted via the system's default browser to log into the service afterward.
The resultant MBOX file can be accessed later using OSForensics' Email Viewer.
A video tutorial for Imaging a Gmail Account is available in our Video Demonstrations.