We recommend Forcepoint (formerly Websense) for Web-Email-Data DLP.
It is not cheap but it is VERY effective.
If your organization has concerns in the areas of intellectual property, compliance or security you may want to consider Forcepoint.
Forcepoint offers modular products you can grow into and the most common solutions are truly managed from a single applications or “pane of glass.”
Let us show you how to prevent accidental or intentional data loss.