How to automatically generate mail with a domain for a user?

Question

Mail for domain

And is it even possible? How do companies like Yandex and Google generate mail?
Do you need your own mail server for this?
I need the user to receive an email with the domain of my site when registering.

Answer 1

Yes, you need your own mail server

Answer 2

> How to automatically generate mail with a domain for a user?
using code in some programming language for working with the web stack, accept the desired mailbox name from the user, check it for busyness, and execute commands to create this mailbox on the mail server if the name is free.
> And is it possible at all?
no.
> How do companies such as Yandex and Google generate mail?
I mean, of course it's possible.
> Do you need your own mail server for this?
if you find someone else's mail server, the owner of which agrees to start new mailboxes on command from your code, you don't need your own. and if you can't find it, you need it.