[AnonC]

> I researched several different services that could provide a good enough service for a reasonable price and ended up settling on Fastmail.com.

The author also talks about saving a lot of money every year. There are cheaper alternatives to Fastmail that support custom domains and have a focus on privacy. Mailbox.org and Runbox.com are a couple of them. There are more.

[0xfacfac]

This was not the main reason though, I mentioned that as an well appreciated side-effect. The fact that Fastmail was a well known provider with a ton of flexibility, and a fast client helped a lot.