MailMarshal Service Provider Edition (SPE) provides MSPs and ISPs with a range of hosted email security services. Services offered include email filtering, policy control, archiving and reporting. The software’s intuitive, centralised management console makes it easy for MSP/ISP staff to manage policies, user accounts and messages. The Array Manager architecture lends itself to a hosted environment, because it is highly scalable and provides an extremely redundant architecture design for up to 99.999% network availability.”]
Source: https://www.darkreading.com/attacks-breaches/marshal-offers-sp-edition