How Can I Send Emails with PHP Using SMTP Authentication?

Sending Email with PHP via SMTP Authentication

When encountering errors such as "SMTP authentication is required," sending email using PHP necessitates proper SMTP configuration.

The PHP mail() function offers limited functionality and relies on your server's default settings. To enable SMTP authentication, you must modify the php.ini file and specify your SMTP server details.

Consider using libraries such as PHPMailer for enhanced functionality. PHPMailer provides a simple interface to configure SMTP settings, such as:

• SMTP Server: The hostname or IP address of your SMTP server (e.g., "mail.example.com")
• SMTP Port: The port used by the SMTP server (typically 25)
• SMTP Authentication: True to enable SMTP authentication
• Username and Password: The credentials for your SMTP account

Example with PHPMailer:

$mail = new PHPMailer();

// Settings
$mail->IsSMTP();
$mail->CharSet = 'UTF-8';
$mail->Host = "mail.example.com";
$mail->SMTPDebug = 0;
$mail->SMTPAuth = true;
$mail->Port = 25;
$mail->Username = "username";
$mail->Password = "password";

// Content
$mail->setFrom('[email protected]');
$mail->addAddress('[email protected]');
$mail->isHTML(true);
$mail->Subject = 'Test Email';
$mail->Body = 'This is a test email body.';

// Sending the email
$mail->send();

By utilizing PHPMailer or configuring SMTP settings manually, you can reliably send email from your PHP script, ensuring proper authentication and message delivery.

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