query("SELECT email, full_name FROM subscribers"); if (!$result) { http_response_code(500); die(json_encode(['message' => $conn->error])); } $to_emails = []; while ($row = $result->fetch_row()) { $to_emails[] = "$row[1] <$row[0]>"; } $to = implode(", ", $to_emails); $headers = [ 'From: Miles Linden ', 'X-Mailer: PHP/' . phpversion() ]; $message = wordwrap($message, 80, "\r\n"); if (!mail($to, "MILES LINDEN CAMPAIGN ALERT", $message, implode("\r\n", $headers), '-fno-reply@mileslinden.com')) { http_response_code(500); die("Error: failed to send email message."); } die("Sent email successfully.");