When does the Case Contact receive notification of a new case comment?

The notification of a new case comment reaching the Case Contact is directly tied to the functionality enabled by the System Administrator regarding Case Comment Notifications. When the System Administrator activates the Case Comment Notification feature for contacts, it ensures that any updates or comments made on that case are automatically communicated to the respective contacts, thereby keeping them informed about the ongoing discussions or changes related to their case. This automatic notification is crucial for maintaining transparent and efficient communication between support teams and customers.

Other options, while related to the case management process, do not directly trigger notifications to contacts. For example, configuring Auto-Response Rules pertains to initial responses rather than updates from comments. Meanwhile, posting comments to the Chatter Feed or using email actions involves manual steps and may not guarantee that all relevant contacts receive notifications unless the notification settings have been specifically enabled by the System Administrator.