Email, e-mail or electronic mail is the transmission of messages (emails or email messages) over electronic networks like the internet.

I guess this dry definition is not what you've been looking for. And indeed, it doesn't say or mean much, not to me either. This "transmission of messages" could be anything. But don't let that intimidate or confuse you. Email is as simple and straight forward as letter writing.
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supermarket racks
fruit & vegetable racks
electronic racks

Here you go:

Continued: http://en.wikipedia.org/wiki/Email

E-mail is nothing but an Electronic mail. It is used to Exchange the Digital messages from one person to another person.

Email means that Electronic Mail. Where we send or receive data.

Hello. E-mail is very important today. Many companies, businesses and usual people use electronic e-mail. It�s easy, fast and reliable way of delivering electronic letters.

Do you really not know what is an email??

Email - Sending an electronic letter whose sending and receiving time delay is of nano seconds.

E-mail means electronic mail.

e-mail stands for the electronic mail. it is used to send impotent information and pictures of your friends.

Thanks to all of you guys for sharing such a very useful information.

email its electronic mail where the mail can be received in few seconds

email is necessary in the world today if you want to communicate fast

electronic method to send messaging or send any kind of transaction or data..

E-mail can be distributed to lists of people as well as to individuals. A shared distribution list can be managed by using an e-mail reflector.

E-mail (electronic mail) is the exchange of computer-stored messages by telecommunication. (Some publications spell it email; we prefer the currently more established spelling of e-mail.) E-mail messages are usually encoded in ASCII text. However, you can also send non-text files, such as graphic images and sound files, as attachments sent in binary streams. E-mail was one of the first uses of the Internet and is still the most popular use. A large percentage of the total traffic over the Internet is e-mail. E-mail can also be exchanged between online service provider users and in networks other than the Internet, both public and private.