For anyone about to disagree with this; you've been lied to.
Many thousands of admins are currently operating independent email servers with zero problem, and have been for decades. Mine is going on 15 years. In practice, you have to actually try pretty hard to misbehave enough for Google and Microsoft to notice and block you. For the vast majority of independent servers, we have no problems at all routing to gmail or outlook.
Reports of the death of decentralized email have been greatly exaggerated. Independent mail servers are alive and well to this day, just as they always have been and (probably) always will.
Many thousands of admins are currently operating independent email servers with zero problem, and have been for decades. Mine is going on 15 years. In practice, you have to actually try pretty hard to misbehave enough for Google and Microsoft to notice and block you. For the vast majority of independent servers, we have no problems at all routing to gmail or outlook.
Reports of the death of decentralized email have been greatly exaggerated. Independent mail servers are alive and well to this day, just as they always have been and (probably) always will.