It takes into account new payload structure with attachments.
Due to Slackbot limitations it doesn't support attachments, so it has to just text:
If you want a little more control over your automated messages (such as specifying the username or adding formatting), you'll want to use Incoming WebHooks instead of Slackbot.
It takes into account new payload structure with attachments.
Due to Slackbot limitations it doesn't support attachments, so it has to just text: