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An e-mail utility that automatically replies to an e-mail message with a prewritten response when that e-mail comes into a specific e-mail or Internet address.

Autoresponders are used by individuals and also by Web sites that need to respond to user comments automatically.

For example, an individual may use an autoresponder feature of e-mail to inform the sender that he has gone on vacation and will not be replying personally to e-mails until he returns to the office; an enterprise may use an autoresponder in response to a newsletter subscription request to verify the opt-in or subscription cancellation or to indicate to the sender that a user comment was received.

Autorepsonders are also used by enterprises to indicate that an online purchase was processed and will typically include an order confirmation number in the e-mail that is automatically generated and sent to the purchaser.

A way of having a group discussion with list subscribers by email. Emails are sent to all list subscribers.

Popular mailing list programs, like Listserv and Majordomo, allow for automated subscription and un-subscription from a mailing list.

Some hosting plans allow creation of mailing lists.

There are 3 standard modes most email servers can operate.

One to many - useful for newsletters

Many to many - anyone can send the group an email

Many to many moderated - same as above but the email must be approved

A SMTP server that allows sending anonymous email messages. It removes or changes the “From” field of all messages that it processes.

Most e-mail systems that send mail over the Internet use SMTP to send messages from one server to another; the messages can then be retrieved with an e-mail client using either POP or IMAP.

In addition, SMTP is generally used to send messages from a mail client to a mail server. This is why you need to specify both the POP or IMAP server and the SMTP server when you configure your e-mail application.

A method allowing a client email program to access remote messages stored on a mail server.

The protocol includes operations for creating, deleting, and renaming mailboxes, checking for new messages, message parsing, searching, and setting and clearing flags. IMAP was originally developed in 1986 at Stanford.