Avanan now introduces configurable SMTP headers for sensitive emails restored from quarantine, enabling downstream systems to take automated actions - such as encrypting the email - after it has been released.

Some organizations require additional processing for emails that were initially quarantined due to DLP policies. With this new workflow, admins can configure an SMTP header to be added only after a sensitive email is restored from quarantine, allowing downstream solutions to identify and act on the email accordingly.

This enhancement offers greater flexibility in aligning email flows with organizational policies. Security teams can quarantine sensitive messages to prevent unintended exposure, and when a message is later restored, Avanan adds the specified header before final delivery. This allows integrated solutions - such as encryption platforms or routing systems - to apply further controls based on the added header. It complements the existing capability to add SMTP headers directly on delivery, giving admins more nuanced control over how sensitive emails are handled.

The new workflow is available under the Microsoft 365 Mail DLP policy and is currently supported for Microsoft 365 customers.