Open-Xchange Email Format
Software DevelopmentNorth Rhine-westphalia, Germany51-200 Employees
Open-Xchange (OX) is a software development company headquartered in Cologne, Germany in North Rhine-Westphalia, with 51-200 employees and offices in Hamburg, Nuremberg, Olpe, and international locations in the United States (Palo Alto and New York), Finland (Espoo), the Netherlands (The Hague), Italy (Turin), and Japan (Tokyo). It describes itself as a market leader of secure and open communication and office productivity software, including IMAP server software and DNS solutions, with more than 220 million seats sold through hosting providers and telcos, and it serves customers through partnerships with firms such as IONOS, Orange, Italiaonline, Comcast, GoDaddy, NTT and Softbank. The company develops and operates Open Source software as a service for mail, messaging, and collaboration, with Dovecot as the IMAP server software and PowerDNS for DNS services. Open-Xchange traces its roots to Open Source and maintains a culture that is open, diverse, and with a bias to act, enabling teams to take responsibility. The company has a global footprint and has engaged in product and partnership activity, including the launch of OX Cloud via Thexyz in 2023.