What should be checked if an email issue is isolated to iCloud?

When addressing an email issue specifically isolated to iCloud, the most pertinent action is to examine the health of the email service through failed health checks in the mail health check subtab. This tool offers insights into any ongoing issues or outages within the iCloud mail service that could be affecting email functionality. By running a health check, you can quickly determine if there are broader service disruptions impacting users or account-related concerns.

While other factors like storage capacity, password issues, or network speed can affect overall email performance, they do not directly address the functionality or operational status of iCloud's email services. For instance, checking storage capacity is essential if you're having trouble sending or receiving emails, but if the problem is known to be isolated to iCloud, identifying service health is the priority. Similarly, if the password is incorrect, it typically leads to login issues outside the scope of simply an iCloud email service problem. Finally, network speed issues are crucial for general connectivity but are secondary to confirming the iCloud service's status itself when problems arise specifically reported in that area. Thus, focusing on the health checks allows for a more direct approach to resolving iCloud-related email issues.