title: Msgraph set notificationQueryOptions to avoid Bulk emails
body: <p>I know that Microsoft 365 has a filter for Bulk email and in the Email Header there is a code called Bulk complaint level (BCL):</p>
  <p>X-Microsoft-Antispam: BCL:0;</p>
  <p>0 -&gt;The message isn't from a bulk sender.<br />
  1, 2, 3 -&gt;The message is from a bulk sender that generates few complaints.<br />
  4, 5, 6, 7* -&gt; The message is from a bulk sender that generates a mixed number of complaints.<br />
  8, 9 -&gt;The message is from a bulk sender that generates a high number of complaints.</p>
  <p>I am trying to set a filter when I create the Subscription to receive notification only when a non Bulk Email is received(BLC: 0)</p>
  <pre><code>{
      &quot;changeType&quot;: &quot;created&quot;,
      &quot;resource&quot;: &quot;me/mailFolders('Inbox')/messages&quot;,
      &quot;clientState&quot;: &quot;secret&quot;,
      &quot;notificationUrl&quot;: &quot;https://...&quot;,
      &quot;notificationQueryOptions&quot;: &quot;$filter = X-Microsoft-Antispam eq BCL:0&quot;,
      &quot;expirationDateTime&quot;: &quot;2021-09-12T22:42:09Z&quot;
  }
  </code></pre>
  <p>but it doesn't seem to work</p>