What is the purpose of Recipient Validation in Mimecast?

The purpose of Recipient Validation in Mimecast is to ensure that the destination mailbox exists for inbound email. This feature plays a critical role in maintaining the integrity of email delivery by confirming that the addresses to which emails are being sent are valid and recognized within the recipient domain. By validating recipient addresses, Mimecast helps reduce the risk of emails bouncing back and minimizes the chances of sending messages to non-existent mailboxes. This process ultimately enhances email deliverability and maintains a clean sending reputation, which is crucial for organizations that rely on email for communication.

In contrast, verifying outgoing emails relates more to ensuring that messages meet specified criteria before they leave the organization, which is not the focus of Recipient Validation. Validating email attachments pertains to assessing the safety and security of attachments rather than checking recipient addresses. Similarly, checking the sender's domain relates to the assessment of the authenticity of the sender, rather than validating the recipient's mailbox existence. Thus, understanding the specific focus of Recipient Validation clarifies its critical importance in managing email traffic efficiently.