I was just wondering how PHP's mail () function manages to send email Because we do not provide any SMTP server, e-mail usernames and passwords and it still sends emails.
How is this possible?
The PHP mail () function sends mail to the server. Any server capable of sending mail is connected to the node internet.
It is highly recommended that you go through a SMTP server, as the spam filter does not like the mail sent from the most unknown IP address.
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