// Setup Gmail SMTP.
add_action( 'phpmailer_init',function( $phpmailer ) {
	$phpmailer->isSMTP();
	$phpmailer->Host       = 'smtp.gmail.com';
	$phpmailer->SMTPAuth   = true;
	$phpmailer->Port       = 587;
	$phpmailer->SMTPSecure = 'tls';
	$phpmailer->FromName   = get_bloginfo( 'name' );

	// Your Gmail address.
	$phpmailer->Username   = '[email protected]';
	// Your Gmail address.
	$phpmailer->From       = '[email protected]';
	// Your Gmail "App" password.
	// https://support.google.com/mail/answer/185833?hl=en
	$phpmailer->Password   = 'xxxx xxxx xxxx xxxx';

	// Send all emails to the fixed address.
	$phpmailer->clearAddresses();
	$phpmailer->clearCCs();
	$phpmailer->clearBCCs();
	$phpmailer->clearReplyTos();
	// Your Gmail address.
	$phpmailer->addAddress( '[email protected]' );
} );

// Set the from email address.
add_filter( 'wp_mail_from', function( $email ) {
	// Your Gmail address.
	return '[email protected]';
} );

// Log failed emails. If you encounter an error, please check the log.
add_action( 'wp_mail_failed', function ( $error ) {
	error_log( print_r( $error->get_error_message(), true ) );
} );