Which option is not associated with Attachment Protection Delivery?

The concept of Attachment Protection Delivery typically revolves around ensuring that email attachments are scanned for potential threats before they reach the recipient. This often includes features that actively assess files for risks, such as malware or viruses, while they are in transit.

The option of Safe File with Pre-emptive Sandbox directly relates to this process, as it entails analyzing attachments in a controlled environment before they are delivered to users. This is a proactive measure in threat prevention, which aligns closely with Attachment Protection goals.

File Encryption is primarily concerned with securing the contents of an attachment, ensuring that only authorized users can access the data. While important for data security, it does not inherently play a role in threat detection or protection during delivery.

Real-time Threat Scanning is a fundamental aspect of Attachment Protection Delivery. It involves continuously checking attachments as they are received or accessed to identify any malicious content instantly.

Spam Filtering aims to identify and manage unsolicited or potentially harmful emails but does not specifically deal with the protective measures concerning file attachments. It serves a different purpose than what Attachment Protection Delivery focuses on.

Hence, the option that does not align closely with Attachment Protection Delivery by not involving the analysis or protection of attachments during their transfer is File Encryption.