SMTP Authentication

SMTP authentication is like having a secret password when you want to send an email. Just like how you need a password to get into your phone or computer, you need a special password to send emails from your email account. This keeps your email safe from people who want to pretend to be you and send fake emails. It's like having a secret handshake that only you know so that the other person knows it's really you. By using SMTP authentication, you are making sure that only you can send emails from your email account, and no one else can pretend to be you.