"Great Buy for MSP"
I was a GFI customer for a long time with multiple clients using their services. Since their pricing/sales model no longer fit my needs, I was elated to find SpamTitan and its ability to serve my customers privately from an MSP perspective. Also, I was able to get quick answers and I was able to buy the product directly from their website in minutes. Hands down, best product I have found in the past 5 years.
Pros: My favorite thing about SpamTitan is the level of control I have over inbound and outbound mail from an MSP perspective. The pricing also makes it very affordable.
Cons: Id like to have a bit more control on the OS layer to be able to mitigate vulnerabilities if found.