More than 6 million email viruses are sent out every single day. Spam represents an estimated 70% of all email traffic.

Protecting against spam and unwanted email threats is essential.

onTop can help.

Why email as a service with onTop

With onTop Email Security as a Service powered by Cerberus + secure your incoming emails with 99.98% filtering accuracy with zero false positives to add to your email archives. No need to hassle and waste time with sketchy emails, because we will immediately quarantine threatening emails away from your mail server.

  • Eliminate CapEx and reduce costs
  • No-hassle installation and maintenance (that’s what we’re here for)
  • Free up bandwidth and storage
  • 99.98% filtering accuracy (so you get the emails you want, not the ones you don’t)
  • Improve scalability
  • Quarantine feature (never mix unwanted emails with sensitive email information)
Email Security as a Service offers the same benefits all cloud-computing platforms provide, including reduced hardware requirements and scalability without major capital investment. There is another advantage with email security services that doesn’t get as much hype: reduced bandwidth. The email security service provider can process the spam and fend off malicious attacks while the customer only processes legitimate messages. With all of the other advantages of Email Security as a Service products and services, a best practice may be to get out of the email security business to focus on more critical security projects.
Joseph Granneman

Email Security as a Service – Q&A with the onTop Team

A: No, you can use Cerberus+ independently of most email systems. Simply point your Mail Exchanger (MX) DNS record to Cerberus+ and Cerberus+ will forward to your email platform.
A: Each user will get daily reports of spam and has the ability to release and train those emails so they are less likely to get caught in the spam quarantine. There is also the ability to login to the portal and list the quarantine in the event someone indicates they recently sent an email that you did not receive.
A: This can usually be provisioned very quickly, depending on the email server that is hosting your email and the configuration of your DNS records. In best cases this can be provisioned in a matter of hours without any downtime.
A: Yes, you can add as many domains as you need to the filtering system. Each can be controlled individually or together using aliasing.

Let’s get started!

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Your peers average a 244% ROI with onTop.

Let’s explore how we can do the same for you.

Rave Reviews

While there are numerous hosting providers to choose from, we found that only onTop Technology Corp had “above and beyond” personalized service backed by the integrity of a Tier III certified data center. By partnering with onTop, we were able to greatly enhance our IT infrastructure.
Steve Booze, AppointmentPlus
Here at BidTracer we have developed a cloud based software for construction. Many of the challenges these days of having the expertise on staff at our company has been answered by onTop’s knowledgeable staff. They have set up our phone system integrated with Microsoft Lync and made it a seamless switch over. They are there throughout the whole process and you can tell they take pride in their work.
Samir Gulrajani, BidTracer
We grow by acquiring new stations. Each time, I have to integrate the station into the corporate network, which takes three to four days. onTop is working on a ‘station-in-a-box’ idea that will enable a new station to literally plug right in. onTop is helping us figure out how to better scale.
SPARROW relies on onTop for help managing infrastructure costs. That’s strategic. If you can’t manage your infrastructure cost it affects overall profitability.
Matanda Doss, SPARROW
Whereas the old IT vendor delivered an ‘out-of-the-box’ solution – that is, more capacity – onTop helped us figure out how to put our IT capacity to best use. They helped us align our IT infrastructure to our business objectives. That has been a critical element in our successful growth.
Steve Booze, AppointmentPlus
If we can’t be scalable and highly available then we lose customers. Our strategy is of course to keep them. onTop helps us do that.
Matanda Doss, SPARROW
Before onTop, we were with a provider that didn’t really care about how we used – or even if we used – the capacity they had sold us. To increase our compute capacity we had to buy CPU, RAM, etc. in ‘buckets’ whether we needed it or not. In order to get what we needed of one thing, we ended up overbuying in other areas. That’s good for the seller, not so much for us.
Mark White, AppointmentPlus
Your infrastructure is the foundation for your operations success. By leveraging a scalable solution you can focus almost exclusively on the operation of your company and the growth model you have. The hardware limitations in a self-hosted environment are removed with a partner such as onTop.
Patrick Groves, On Time Express


Business growth today is driven as much if not more by growing profit margins than by growing revenue. IT plays an instrumental role in that growth.


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