As an MSP, we love how we can add client new domains to go through our SpamTitan Private Cloud. Set-up of SpamTitan is no more than a few minutes.
The general settings of SpamTitan cover 95% of our use cases, and from then on, SpamTitan allows us to customize extensively per domain/user. We also love that new features are being added periodically (at no additional cost) giving SpamTitan great value.