The system has an automated low-credit alert feature that activates when your credits reach a specific threshold based on your subscription plan.
For monthly and annual plan subscribers, the alert is triggered once you have utilized 50% of your subscription credits. As your credits decrease further and reach below 100, the frequency of alerts will increase.
For Pay-as-you-go subscribers, the system initiates alerts when your account balance falls below 100 credits.
Currently, there is no option available to disable the alert for a specific account. As a workaround, you may consider setting up an email filter that automatically archives emails related to credit alerts. You can refer to this guide on how to set up such a filter for Google Mail: Google Mail Email Filter Setup Guide