Hi there,
Thank you so much for getting in touch with us.
Unfortunately, it is not currently supported in the latest version of the VGM Add-on to change the email received when a user submits a marker.
However, VGM V4 is currently in active development which will resolve this as it adds things like, one-click approval and details.
We do not have a current eta on this at this time.
Thank you so much for your time and I look forward to hearing from you.
Kindest regards,
Jaden Botha