SolarWinds offers Mail Assure, a cloud-based email security solution designed to help customers stay in control and protect their inbound and outbound email using collective threat intelligence, 24/7 email continuity, and long-term email archiving.
We have used a few mail security options, including SpamStopsHere. Mail Assure is easier to manage and adapts as it learns the email traffic and patterns that come into the company. We use most of the SolarWinds suite, including MSPManager, N-central, Passportal, and Endpoint …
AppRiver is very much a set and forget type of email filter with almost no configurability and no flexibility. I am sure AppRiver is good for those that don't want to have to configure it, and those that don't want to change the product (they just want to buy a service, and …
Mail Assure was very close in all it's features, but lacked the secure email function. But the price difference between Mail Assure and Barracuda was significant enough to go this direction. Secure email is in development and will hopefully be available soon.