cdsaenz/functions.php

## functions.php
<?php

use PHPMailer\PHPMailer\PHPMailer;

// Set up SMTP settings
add_action( 'phpmailer_init', 'wpse_phpmailer_init' );
function wpse_phpmailer_init( PHPMailer $mailer ) {

    $mailer->isSMTP();
    $mailer->Host       = ''; // replace with your SMTP server hostname
    $mailer->SMTPAuth   = true;
    $mailer->Username   = ''; // replace with your SMTP username
    $mailer->Password   = ''; // replace with your SMTP password
    $mailer->SMTPSecure = 'ssl'; // or tls
    $mailer->Port = 465;      // replace with your SMTP port number
}

$to      = 'testemail@gmail.com';
$subject = 'Test Email with HTML Content';
$message = '<html><body><h1>Hello, World!</h1><p>This is a test email with <strong>HTML content</strong>.</p></body></html>';
$headers = array('Content-Type: text/html; charset=UTF-8');

// Send the email
if (wp_mail($to, $subject, $message, $headers)) {
	error_log('Email sent');
}
else {
	error_log('Email NOT sent');
}
	<?php

	use PHPMailer\PHPMailer\PHPMailer;

	// Set up SMTP settings
	add_action( 'phpmailer_init', 'wpse_phpmailer_init' );
	function wpse_phpmailer_init( PHPMailer $mailer ) {

	$mailer->isSMTP();
	$mailer->Host = ''; // replace with your SMTP server hostname
	$mailer->SMTPAuth = true;
	$mailer->Username = ''; // replace with your SMTP username
	$mailer->Password = ''; // replace with your SMTP password
	$mailer->SMTPSecure = 'ssl'; // or tls
	$mailer->Port = 465; // replace with your SMTP port number
	}

	$to = 'testemail@gmail.com';
	$subject = 'Test Email with HTML Content';
	$message = '<html><body><h1>Hello, World!</h1><p>This is a test email with <strong>HTML content</strong>.</p></body></html>';
	$headers = array('Content-Type: text/html; charset=UTF-8');

	// Send the email
	if (wp_mail($to, $subject, $message, $headers)) {
	error_log('Email sent');
	}
	else {
	error_log('Email NOT sent');
	}