title: Can slack webhooks mention multiple users in a single webhook request?
body: <p>As title says, I'm looking to send a single request to a web-hook to mention multiple users. At the moment, from testing I can only seem to get it to mention one and any more results in it either converting the entire body to a string or simply mentioning one.</p>
  <pre><code>curl --header &quot;Content-Type: application/json&quot; \
    --request POST \
    --data '{&quot;incoming&quot;:&quot;user@email.com&quot;}' \
    https://hooks.slack.com/workflows/ID
  </code></pre>
  <p>This is the call I'm making to the workflow Webhook URL &amp; I was trying to use the user's email as an indetifier. It works for the first but not for any others.</p>
  <p>Any info is greatly appreciated, I <em>know</em> I'm doing something dumb here!</p>