Current State:

Currently, customers can choose between 2 views when using the "Jira Cloud for Slack (official) app:  

Truncated: 

All: 

Proposed Future State:

Add options to allow customers to choose what information is included in the notification sent to Slack. 

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App link: https://<site>.atlassian.net/jira/marketplace/discover/app/com.atlassian.jira.slack