A distribution list[1] is an application of email client programs that allows a user to maintain a list of email addresses and send messages to all of them at once.
This can be referred to as an electronic mailshot.
Sending mail using a distribution list differs from an electronic mailing list or the email option found in an Internet forum as it is usually for one-way traffic and not for coordinating a discussion.
A distribution list is an email equivalent of a postal mailing list.
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