[anyfoo]

I still run my own router at home, and my own servers of various kinds. I put a lot of thought into my packet filter configuration for example, and overall my handwritten router and server stuff comes at a maintenance cost that I am happy to pay.

Not so for email. It just stopped being worth it about 10 years ago or so. Regularly fine-tuning your configuration to not only not be marked as spam in originating mails, but to also filter incoming spam, walking the thin line between filtering too much and too little, was just no fun.

I looked out for an email provider that provides the flexibility that I'm used to (multiple domains, catchall for subdomains, sieve filtering etc.), pay them a few dollars per month or year, and haven't looked back. My DNS is still homegrown and I handwrite my zones, but the MX just points to my provider.