台糖網路郵局 http mail taisugar com tw

A classic!

The website you're referring to is indeed the online email service provided by Taiwan Sugar Corporation (台糖公司), a well-known Taiwanese company that was once a major player in the sugar industry.

The website is http://mail.taisugar.com.tw, and it's still active today, although the company has since diversified its business and is no longer solely focused on sugar production.

The email service is likely a legacy system that was set up by the company to provide email services to its employees, customers, and partners. While it may not be as modern or feature-rich as some of the more popular email services available today, it's still a functional and reliable way to send and receive emails.

It's worth noting that the website is not very secure, as it uses an outdated HTTP protocol instead of the more secure HTTPS protocol. This means that any sensitive information transmitted through the website may be vulnerable to interception and eavesdropping.