Postini, a subsidiary of Google, specializes in providing email security and archiving solutions for businesses. Operating in the cybersecurity market, Postini serves a wide range of clients from small businesses to large enterprises, helping them protect their email communications from threats such as spam, viruses, and phishing attacks. The company also offers services to ensure compliance with various regulatory requirements by archiving emails securely. Postini's business model is based on a subscription service, where clients pay a recurring fee for access to its suite of security and archiving tools. This model ensures a steady stream of revenue while providing continuous updates and support to its clients. By leveraging Google's robust infrastructure, Postini delivers reliable and scalable solutions that can adapt to the growing needs of its clients.

Keywords: email security, archiving, compliance, cybersecurity, spam protection, virus protection, phishing protection, subscription service, Google infrastructure, business solutions.