How Can I Authenticate SMTP to Send Emails with PHP?

Sending Email with PHP via SMTP Authentication

In PHP, sending email through an SMTP server requires specific configurations to authenticate the sender's identity. When using the built-in mail() function, you may encounter the error "SMTP server response: 530 SMTP authentication is required."

SMTP Authentication

To resolve this issue, you need to enable SMTP authentication in your code. This involves setting the SMTP host, username, password, and potentially the port if it's non-standard (default port is 25).

PHP Code with SMTP Authentication

PHPMailer

PHPMailer is a popular PHP library that simplifies the process of sending email through SMTP. It handles authentication and provides a more robust interface for email composition.

For more details on PHPMailer, visit: https://github.com/PHPMailer/PHPMailer

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