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(Electronic-MAIL) The transmission of text messages from sender to recipient. Email messages can also be formatted with graphics like a brochure or Web page, an enhancement that many users like, but that creates more spam and a security risk (see HTML email).

Users can send a mail message to a single recipient or to multiple users. In addition, JPEG photos as well as any other type of computer file may be attached to the message (see email attachment). Mail is sent to a simulated mailbox in the organization's mail server until it is downloaded to the "in" mailbox in the user's computer.

The Messaging System and the Client
An email system requires a messaging system, which is primarily a store and forward capability based on the Internet's Simple Mail Transfer Protocol (SMTP). A mail program (email client), such as Windows Mail, Mac Mail, Outlook and Eudora, provides the user interface for mailboxes and send and receive functions. Popular email services such as Gmail and Yahoo Mail are Web based, in which case the Web browser is used as the mail program (see email interfaces).

The Internet Changed It All
The Internet revolutionized email by turning countless incompatible islands into one global system. Initially serving its own users, in the mid-1990s, the Internet began to act as a mail gateway between the major online services such as CompuServe and America Online (AOL). It then became "the" messaging system for the planet. In the U.S., Internet mail is measured in the trillions of messages each year. See email vs. fax, messaging system, instant messaging, read receipt and self-destructing email.

Could They Have Imagined Spam?
When they sent this first message in 1971, could they have imagined the trillions of email messages that would follow in years to come? (Image courtesy of Dan Murphy,

The First Email on the Internet

In 1971, the first email message was typed into the Teletype terminal connected to the Digital Equipment PDP-10 toward the back of the room in the following picture. The message was transmitted via ARPAnet, the progenitor of the Internet, to the PDP-10 in front. Dan Murphy, a Digital engineer, took this photo in the Bolt, Beranek and Newman datacenter. See ARPAnet.

Could They Have Imagined Spam?
When they sent this first message in 1971, could they have imagined the trillions of email messages that would follow in years to come? (Image courtesy of Dan Murphy,
References in periodicals archive ?
Many ISPs have a strict policy of blocking HTML e-mails that are not formatted properly, so you'll need to ensure your web staff takes special care to make your HTML e-mails are squeaky clean.
Even if you have broadband at camp, large attachments eat up storage space as well as bandwidth increasing the chances that parents' e-mails will bounce.
Another advantage of SPF is that it rejects spoofed e-mails before they ever enter a corporate network.
While governments, businesses, and consumers worldwide agree that fraudulent spam e-mails must be eradicated, their methods of solving the problem differ.
Of the e-mails you send, you can determine how many are opened, and how many links are followed.
It features short, modular lessons, printable job aids, practice exercises to help learners apply skills and assess progress, and numerous examples of effective e-mails.
In filter-based systems, we often have to check the quarantine box for valid e-mails because the system might make a mistake.
When e-mail is added to the equation and linked to this central repository, e-mails can be retained for knowledge management and records management purposes.
Identified a person in their company with over 33,000 unopened e-mails in her inbox folder.
the premier e-mail performance management company, announces today that it has acquired NetCreations, Inc.
In the age of e-mail and instant messaging, 'kiss and tell' has taken on new meaning," said Nancy Flynn, executive director of The ePolicy Institute, www.
To shield e-mail infrastructures against high-volume e-mail assaults the AP Intelligent Mail Switch provides powerful Queue Engine Management technologies: