The AWS CloudTrail SES Check Send Quota rule is designed to detect instances when users query the sending limits of Amazon Simple Email Service (SES) through the GetSendQuota API call. This can indicate reconnaissance efforts to gauge the email capabilities and limits set on an AWS account, which could be a prelude to malicious activities aimed at exploiting these limits for spamming or phishing attacks. The rule is enabled and categorized with an informational severity level, meaning it provides insights without requiring immediate action. The associated log type is AWS CloudTrail, which ensures that all actions are tracked appropriately for auditing and compliance purposes. The source of the event is SES, and it captures key details about the API call such as the eventID, user identity, and the time the event occurred. Additionally, this detection may help in observing abnormal behavior in the context of AWS resource usage concerning email delivery.