This is not possible at the moment. We will be focusing more on Slack-to-JIRA integration later this year so then such feature might find it's way.
At this point however, we have an improvement already in our backlog which does exactly what you are looking for but it will work only when you use our "Slack" tab on JIRA issue page to sent the message.
This should be released much sooner.
Hello! My name is Genevieve Blanch, and I'm the Marketing Manager at RefinedWiki, creators of apps to give teams the tools to customize Atlassian platforms. Currently, 44% of the tech team at Re...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs