Slack preview for application message
Axel Prat
I'm New Here 
I'm New Here
Those new to the Atlassian Community have posted less than three times. Give them a warm welcome!
Hello,
I'm making an application that send messages to users but when I send a message with a Jira link from my application (using post on chat.postMessage) there is no preview.
I don't know if I miss a parameter or an authorization in my application but nothing seems to work.
