Option to send alert message without preamble?

[arobertpk]

Hello,

I have a custom message for an ALERT (not an OUTPUT) configured as shown:

However when this gets over to Slack I get:

Is there an option to exclude all of that header/preamble circled and just send what I have in the message template? If not, could this please be added? The HipChat plugin worked this way and it made for a much cleaner chat log. I understand there is a "short mode" available when running as an output notification, but don't see the reason for the artificial restriction here. Thanks.

[PaulMHalliwell]

I'd also like to see this.

The information that I'm looking to output is in the custom message, rendering the trigger condition text moot. If there was a way to push only the custom message that'd be ideal.

[webmastir]

Did anyone fork this and remove the preamble?