After examining the uploaded files, I identified issues with unreachable email addresses in the 'Authors' section of the README.md file:

1. **Issue**: Unreachable Email Address
   - **Evidence**: The email "email_author@example.com" is incorrectly formatted.
   - **Description**: This email in the Authors section is invalid and should be corrected for proper author contact.

2. **Issue**: Inaccessible Email Address
   - **Evidence**: The email "author2@email.com" appears invalid.
   - **Description**: This email for an author may be incorrect and should be verified for effective communication.

Let me know if further analysis is needed.