So just as a slight question.....as I don't deal with this sort of stuff......
It seems to me that these style ISP/Email providers are from the 90's. Shouldn't they be phased out? I've been with GSuite since it became a paid option (and I'm sure others have been in similar just with Microsoft 365) and I have my own domain, because I never wanted to deal with the limitations of the old school retro email service. I recall the days of webmail. They were horrible, slow, had so many issues if folks wanted to use multiple devices and it was like pulling teeth to get support to fix issues or help. You had to tell clients "take it up with your provider, we can't change what they provide".(that was me when I worked in retail with customers)
Aside from a legacy email address, why would anyone settle for less? I'm sure they pay either as much or even more than a comparable GSuite or 365 suite. I know some get it from hosting providers but even many of those providers are kinda old school.
Myself I cancelled my hosting and just have email. Don't need a website.