title: POST Request Work on POSTMAN but not in PHP
body: <p>I need to POST and get content of the reply email. </p>
  
  <p><strong>Link</strong> - <a href="https://sacramento.craigslist.org/cto/d/north-highlands-2005-toyota-tacoma-4x4/7102315098.html" rel="nofollow noreferrer">https://sacramento.craigslist.org/cto/d/north-highlands-2005-toyota-tacoma-4x4/7102315098.html</a>
  In this link there will be Reply button. When you enter the button an XHR request will send with form data named as <code>browserinfo3</code>. Inside they send browser specific data. 
  But I have tried the request <strong>without any params</strong> in POSTMAN. Just changed the request type to POST and result has been returned successfully. 
  Now I have written the same script in PHP by using Guzzle. Tried many ways but no success. <strong>It always returns 404 request.</strong> Can you please tell me how to POST correctly in order to get successful request. </p>
  
  <pre><code> $emailUrl = 'https://sacramento.craigslist.org/contactinfo/sac/cto/7102315098';
   $connection = new Client(["http_errors" =&gt; false]);
   $page = $connection-&gt;post($emailUrl);
  </code></pre>