is running your own e mail server a good idea in 2024? Security issues aside, you are at the mercy of the big email providers and whatever rules they want you to follow
For e-mail addresses as an authentication tool, you don't really need to be able to send emails at all, just receive them, and I think that is pretty feasible to not run afoul of the usual shenanigans.
I think the cost of paying for a dedicated email service is worth it. (There are plenty of smaller, privacy-oriented services such as Proton Mail or Fast Mail.)
They're better at it than I am, and it means I don't have to fill up my free time maintaining another server.
