Private email will have no problems. I also ran my own mail server for personal use and had almost zero problem (and this was on an AWS IP!).
Where people will absolutely have problems is trying to run a marketing campaign through their own IP. You absolutely will (and should) get blocked. This is why these mixer companies exist and why you pay for an intermediary to delivery your mail.
Where people will absolutely have problems is trying to run a marketing campaign through their own IP. You absolutely will (and should) get blocked. This is why these mixer companies exist and why you pay for an intermediary to delivery your mail.