Which feature ensures that emails are processed immediately upon receipt?

The feature that ensures emails are processed immediately upon receipt is the Immediate Processing Queue. This functionality is designed to handle incoming emails as soon as they arrive, allowing for instant examination and routing. By utilizing this queue, the email security system can ensure that all emails, including those that require immediate attention due to potential threats or filters, are processed effectively without unnecessary delays.

This capability is crucial for maintaining email security and user productivity, as it minimizes wait times and ensures timely responses. Other systems, while potentially offering similar capabilities, may not prioritize immediate processing in the same way, leading to slower response times for incoming emails. Therefore, the Immediate Processing Queue is essential for swift and efficient email handling, making it the best choice for this question.