Open-Xchange is a long-standing software company that makes the OX App Suite — a platform for business email, collaboration, and communication. When you're evaluating business software, you need to know who runs the show and whether the site is secure. Open-Xchange checks both boxes easily.
The domain was registered in 2004, which is a strong sign of stability. Most fly-by-night operations in the SaaS space don't survive two years, let alone two decades. The site publishes an Impressum (a legal requirement in Germany for commercial websites) with the company's official registration details, and they have a clear privacy policy and terms of service.
Security is on par with what you'd expect from a company that sells enterprise software. The site uses modern encryption, enforces HTTPS, and has protections against common web attacks. There's no history of malware or phishing associated with the domain.
So is open-xchange.com a scam? No — every signal points to a legitimate, established business. If you're considering their products for your organization, the trustworthiness of their website shouldn't be a concern. As with any software vendor, you'll still want to evaluate the product itself and read customer case studies, but the site itself is safe and transparent.