What is the difference between SMTP_HOST and SMTP_DOMAIN?

[JacobDB]

I'm not sure how to get this configured because I don't know what it's asking me. Is SMTP_DOMAIN the domain after the @ in the address, and then for the SMTP_USERNAME I would put the part before?

[Freika]

I don't think there is an env var SMTP_HOST.

SMTP_DOMAIN => domain name to send email from, for example, dawarich.app
SMTP_FROM => email address to send email from, for example, hi@dawarich.app
SMTP_PASSWORD => password from your SMTP provider that will authenenticate you on their servers so they could send emails on behalf of SMTP_FROM
SMTP_PORT:              587
SMTP_SERVER => email server, for example, smtp-relay.brevo.com
SMTP_USERNAME => SMTP server username to authenticate you, for example, some-random-value@smtp-brevo.com