Several scenarios may necessitate the revocation of an API key:
1. Security Breach: If you suspect that your API key has been compromised, it’s essential to revoke it immediately to prevent unauthorized access. 2. Employee Turnover: When employees who had access to your API keys leave your organization, it's prudent to revoke the keys they had access to. 3. Changing Services: If you switch to a different email marketing service or platform, you may need to revoke keys associated with the old service. 4. Unused Keys: Periodically reviewing and revoking unused keys can help in reducing the risk of potential security vulnerabilities.