Suzhou Huazhao Technology develops Winmail, an email server software product designed to help organizations deploy and manage their own email systems. The software supports Windows and Linux and includes SMTP, POP3, and IMAP protocols, providing core services for sending, receiving, and accessing email. Security features include a built-in anti-spam module and TLS/SSL encryption.

Winmail also supports linking with DingTalk and WeChat, along with distributed deployment, to facilitate communication and collaboration across an organization. The company describes the product as mature, straightforward to install, and easy to maintain, and identifies enterprises and government institutions as suitable users. Its offering focuses on practical email infrastructure and deployment rather than a consumer email service.

Huazhao Technology provides technical support and purchasing contacts, with weekday service hours listed as 8:30 a. m. to 5:00 p.

m. The company is based in Suzhou Industrial Park, Jiangsu Province, China, and presents Winmail as a way to establish enterprise-grade email communications across locations and working hours