Message Handling System
Novell's MHS was originally developed by Action Technologies, Inc. (ATI) in 1986, and licenced, then bought, by Novell.
It provided a standard messaging service that could be shared by many applications, handling the collection, routing and delivery of messages and files across multiple computing environments.
Role as a gateway
MHS was a very 'open' system, and this, with Novell's encouragment, made it popular in the early 1990's as a 'glue' between the not only the propriortry email systems of the day such as PROFS, SNADS, MCI, 3+Mail and ccMail, but also the competing standards-based SMTP and X.400. By 1996 it was clear that SMTP across the Internet would be win as the universal email glue.
A compatible range of gateway products called Connect2 from Infinate Technologies (now Captaris) was also very widely used as part of MHS-based email networks.
Email clients
Pioneering Wndows-based da Vinci email and the free Pegasus email client both used MHS as their native protocol.
Links
http://www.actiontech.com/about_us/Chronology.cfm http://support.novell.com/techcenter/articles/ana19951003.html