In most cases, the email program is called the email client. There are several popular programs such as Microsoft Outlook and Mozilla Thunderbird. Email programs use a stand-alone server that stores and delivers the messages of the user. This is usually hosted by an ISP, or in some cases, a company.What is email and how does it work?
Email is short for ‘Electronic mail’ and was designed as a program used to exchange messages that are stored within a computer. In terms of the programming, these are usually encoded using ASCII text.  However, in most cases, a user can also send non-text files such as images, videos, and sound files through the mail as attachments.What is an email client called?
Email client. In Internet, an email client, email reader or more formally mail user agent (MUA) is a computer program in the category of groupware environments used to access and manage a user's email.What are the different types of mail software?
Proprietary Software. These is special software designed by the developer to access Mail and do other things. MSN Browser, Mobile systems, Win 8 Mail app, and specialized Browsers are examples of this type software. 2. Email Systems. Hotmail is now using the Outlook.com interface, soon to be replaced by the Outlook.com Preview