I received a request from a PO to explain her about how a test could affect the reputation or metrics.
I explained that for SFMC probably there's no differences among Business Units (BU) but in terms of performance it has too, but not sure.
My question is if there's any reputation affection from 1 BU to another? If there's any limit on the testing amount of emails sent or SMS?
I know reputation could be affected from a bad email/sms practices like not validate the domain or massive sending for marketing purposes...
I know about the transactional/commercial types of emails. What if both are mixed in both BU?