a software program that a computer uses to compose, send and receive email, via an Internet Service Provider

a window where you can send and retrieve email

A computer program that allows you to write, read and send emails

a 3rd party program which allows you to manage your email. e.g. Microsoft Outlook, Outlook Express, Netscape Messenger, Qualcomm Eudora, and others.

'Also referred to as an ''email client'' or ''mail client'', this is the program on your computer used to send and receive email. Once you have configured your email program with the correct incoming and outgoing server settings, it will call up the correct servers to retrieve your incoming messages and send your outgoing messages. Some examples are Eudora, Microsoft Outlook, and Pegasus.'