Most providers now also offer web-based access to e-mails so that you can access them through a browser using HTTP or HTTPS.
HTTP (HyperText Transfer Protocol)
HTTP is the set of rules for transferring files (text, graphic images, sound, video and other multimedia files) between a web server and a client browser over the Internet. This is the default protocol used when you are browsing the web. It is used to transfer HTML (Hypertext Markup Language) web pages.
HTTPS (HyperText Transfer Protocol Secure)
HTTPS is the secure version of HTTP; it encrypts and decrypts user page requests as well as the pages that are returned by the web server. This reduces the risk of sensitive data being read by hackers. This protocol uses SSL (Secure Socket Layer), which manages message transmission security across the Internet.