The article describes how to configure greeting messages for users when they send their first message through Chat-WhatsApp integration. By greeting message, I mean the first automatically sent message to a user as a reply to their first message in a conversation sent via WhatsApp.
\uD83D\uDCD8 Instructions
It is not achievable directly in the app settings, but you can use Jira automation. Each ticket created through WhatsApp includes the word “WhatsApp“ in the summary. You can use this fact and check if the Summary field contains a “WhatsApp“ phrase, and if yes, you can send a greeting message: