I have a customer who wants to move from an old MAC desktop to a Windows 10 / 11 PC. File transfer is not an issue. I have not been on site yet so I am not sure if the email account is IMAP. What is the best way to backup the emails & folders etc on the Mac and drop them into an email client on a PC? It seems that Thunderbird will import the Mbox from the Mac. Is this the way it is normally done? Thanks