vbs script below does function as required but much of the time it introduces two unwelcome issues. All POP in this case.) whilst the program resides in the system tray remaining invisible until required by the user.
I have an issue with an auto start of Outlook 2016 at boot/log on which is intended to start Outlook minimised to the Windows system tray, such that once invoked at Windows 10 launch mail will be collected by the mail account(s) (NB.