vele please modify this before you get in trouble. I’m not sure these comments fall in line with the code of conduct of this project. While I can understand your perspective you still need to follow the code of conduct.
https://discourse.mailinabox.email/faq
also Josh has commented before in these threads that business use is okay - see post: Is Mail-in-a-Box Enterprise ready?
I do however think there is a difference between business use and “mass marketing” though…