ISMail EP provides a highly efficient and cost-effective front-end messaging filter for existing mail systems:
Also, by front-end filtering with ISMail EP, the need for client-side filter solutions for both native mail applications and Webmail is reduced.
Configured as a filter, ISMail EP will process and relay all messages for one or more domains. ISMail EP keeps a complete log of filtered messages for tracking or identification.
Additional information about ISMail EP may be found here.