The cost can be pretty high. Due to their cost, it's okay for the enterprise and the corporate level companies. They are the ones who go for Trend Micro Email Security. A small company does not go for it due to the cost. I'd rate the solution two out of five in terms of affordability.
This solution is used for email security like spam filtering, spam protection from spam fishing, and protection from fraudulent content. The solution can be on-prem or on cloud. We implement it as a cloud solution.