Hostname
HTTP
HTTPMail
HTTPS
Hostname is the term for the label that is assigned to any device connected to a computer network and is used to identify the device across the web. A hostname usually consists of a single word or phrase and can be followed by a Domain Name System domain at the end.
HTTP
the Hypertext Transfer Protocol - provides a standard for Web browsers and servers to communicate. The definition of HTTP is a technical specification of a network protocol that software must implement.
HTTPMail
HTTPMail is a mail access protocol that allows you to access your mail from the server and leaves the email on the server. HTTPMail provides similar functionality to IMAP, where by an Outlook Express or Outlook client can access and manage messages and folders on the server. Unlike IMAP, it does not require SMTP to send messages.
HTTPS
HTTPS stands for HyperText Transfer Protocol over SSL (Secure Socket Layer). It is a TCP/IP protocol used by Web servers to transfer and display Web content securely. The data transferred is encrypted so that it cannot be read by anyone except the recipient.