The Listserv reference article from the English Wikipedia on 24-Jul-2004
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Listserv

Helping orphans the way you would do it
Listserv is an Electronic mailing list software application, originally developed in the mid 1980s for the Bitnet computer network. It was a key service on that network. The word "Listserv" has come to be used loosely as a generic term for any mailing list application of that kind. However, it is a registered trademark licensed to L-Soft International, Inc., who market the application commercially. For this reason, the term should be used only to refer to the actual product.

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