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1. Mobile Device Email Access: Additional requirements for accessing email on mobile devices, recommended when organization allows mobile email access

2. Third-Party Email Services: Guidelines for using external email services, needed when organization allows use of non-corporate email systems

3. Email Retention and Archiving: Specific requirements for email retention periods and archiving procedures, recommended for regulated industries

4. Remote Work Email Security: Special provisions for securing email access when working remotely, needed for organizations with remote workers

5. International Data Transfer: Requirements for handling emails containing data transferred internationally, needed for organizations operating globally

6. Email Marketing Guidelines: Specific requirements for marketing emails, needed if organization conducts email marketing campaigns

1. Appendix A: Approved Email Security Software: List of approved email clients, security software, and encryption tools

2. Appendix B: Email Security Best Practices: Detailed guidelines and best practices for secure email usage

3. Appendix C: Email Security Incident Response Procedures: Detailed procedures for handling different types of email security incidents

4. Appendix D: Email Security Configuration Standards: Technical standards for email client and server security settings

5. Appendix E: Email Security Training Materials: Training guidelines and materials for user awareness

6. Appendix F: Compliance Checklist: Checklist for evaluating compliance with the email security policy