array(4) {
  ["date"]=>
  string(19) "2025-04-27 08:03:11"
  ["userid"]=>
  int(0)
  ["email"]=>
  string(0) ""
  ["res"]=>
  object(SGResponse)#42 (3) {
    ["statusCode":protected]=>
    int(400)
    ["body":protected]=>
    string(204) "{"errors":[{"message":"Does not contain a valid address.","field":"personalizations.0.to.0.email","help":"http://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/errors.html#message.personalizations.to"}]}"
    ["headers":protected]=>
    array(18) {
      [0]=>
      string(24) "HTTP/1.1 400 Bad Request"
      [1]=>
      string(13) "Server: nginx"
      [2]=>
      string(35) "Date: Sun, 27 Apr 2025 06:03:11 GMT"
      [3]=>
      string(30) "Content-Type: application/json"
      [4]=>
      string(19) "Content-Length: 204"
      [5]=>
      string(22) "Connection: keep-alive"
      [6]=>
      string(57) "Access-Control-Allow-Origin: https://sendgrid.api-docs.io"
      [7]=>
      string(34) "Access-Control-Allow-Methods: POST"
      [8]=>
      string(86) "Access-Control-Allow-Headers: Authorization, Content-Type, On-behalf-of, x-sg-elas-acl"
      [9]=>
      string(27) "Access-Control-Max-Age: 600"
      [10]=>
      string(74) "X-No-CORS-Reason: https://sendgrid.com/docs/Classroom/Basics/API/cors.html"
      [11]=>
      string(62) "Strict-Transport-Security: max-age=31536000; includeSubDomains"
      [12]=>
      string(47) "Content-Security-Policy: frame-ancestors 'none'"
      [13]=>
      string(23) "Cache-Control: no-cache"
      [14]=>
      string(32) "X-Content-Type-Options: no-sniff"
      [15]=>
      string(48) "Referrer-Policy: strict-origin-when-cross-origin"
      [16]=>
      string(0) ""
      [17]=>
      string(0) ""
    }
  }
}