Open-Xchange (OX) is a market leader in Mail / Messaging and DNS-based security services, with more than 200m seats sold through international hosting and telco providers worldwide, including partners such as 1&1, Orange, Italiaonline, Comcast, GoDaddy, NTT or Softbank. With some 270+ people worldwide, OX develops and operates Open Source software (aaS) for mail / messaging (OX App Suite, OX Guard) and collaboration / productivity (OX Drive, OX Documents).