https://campaigns.zoho.com/api/v1.1/addlistsubscribersinbulk?resfmt=JSON&listkey=3z47f55c4a9c256d6d010de46cf4bbdcb6c90fd34fc430fd7335e418658bf8f136&emailids=frederic33@frederichoule.comarray(15) {
  [0]=>
  string(13) "HTTP/1.1 200 "
  [1]=>
  string(11) "Server: ZGS"
  [2]=>
  string(35) "Date: Mon, 08 Dec 2025 23:50:44 GMT"
  [3]=>
  string(37) "Content-Type: text/html;charset=UTF-8"
  [4]=>
  string(17) "Content-Length: 0"
  [5]=>
  string(17) "Connection: close"
  [6]=>
  string(86) "Set-Cookie: zalb_805f8c68aa=0e8ccf929869ab4813f3236c702b7f9e; Path=/; Secure; HttpOnly"
  [7]=>
  string(31) "X-Content-Type-Options: nosniff"
  [8]=>
  string(113) "Set-Cookie: ZCAMPAIGN_CSRF_TOKEN=14e989eb-7e51-44a8-9a41-640844d82469;path=/;SameSite=Strict;Secure;priority=high"
  [9]=>
  string(66) "Cache-Control: private,no-cache,no-store,max-age=0,must-revalidate"
  [10]=>
  string(16) "Pragma: no-cache"
  [11]=>
  string(38) "Expires: Thu, 01 Jan 1970 00:00:00 GMT"
  [12]=>
  string(27) "X-Frame-Options: SAMEORIGIN"
  [13]=>
  string(81) "Set-Cookie: JSESSIONID=8BB05D94715B688770715D95FB2D3A13; Path=/; Secure; HttpOnly"
  [14]=>
  string(71) "Strict-Transport-Security: max-age=64072000; includeSubDomains; preload"
}
string(0) ""