How to prevent sent email about account confirmation from getting into SPAM?

Question

Mail server

I have a game server and in order to register there, you need to confirm the mail using a letter sent from my server (meaning directly from the server using your domain for this), but the sent letters end up in spam for users. How to avoid it?

Answer 1

Correctly configure your mail server. Or use a third party SMTP service

Answer 2

Bind the domain to, say, Yandex mail and send via their smtp

Answer 3

you need to attach a DKIM signature to the mail server, then the mailers will trust the sender more and not put it in spam. And how to screw it up - smoke with your hoster

Answer 4

you need to increase the trust of the domain so that letters do not fly into spam