Hong Kong ISP SMTP Information

Most ISPs (Internet Service Providers) provide an SMTP (Simple Mail Transfer Protocol) server to their customers to use for sending email messages. This SMTP server is used to route outgoing email messages to the recipient's email server. 

When you set up your email client, you will need to enter the SMTP server address and port number provided by your ISP. You will also need to enter your email address and password for authentication purposes, as most SMTP servers require authentication in order to prevent the unauthorized sending of email messages. 

It's worth noting that some ISPs may have restrictions on the amount of email that can be sent through their SMTP server, or they may require that you use their SMTP server only when connected to their network. 

各 ISP 供應商 SMTP 主機

Note that the above information is subject to change and may vary depending on your specific account. It is always recommended to check with your ISP customer support for the most up-to-date SMTP information.