The retort was also worth reading:
I ran a hybrid system for a while but am back to 100% my own mail server, with minimal issues.
@emacsen I'm not sure I consider that a retort. The deliverability problem means you still have to pay a centralized email provider to relay your mail for you. It's an option, but that requirement is enough that I didn't find it worthwhile anymore. I still have my own email domain; I just don't operate a mail server anymore.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!