@homegrown I administrated email services for one company, and ran spam filtering front end mail servers for incoming email for another. I would run the spam filtering again at the drop of a hat if anyone asked me to, but even if you're an expert you're dedicating hours of everyday to managing mail services responsibly. For a single family or single person they would not need to apply the same intensity in support, but it would still be borderline whether it was worth it if they knew what they were doing and had experience. Getting your own domain and applying that to an account at Tuta or contracting the service is probably a better use of your time and money.