» Archivum.info    Large archive of mailing lists and newsgroups.    http://archivum.info/

» CataList    The official catalog of LISTSERV lists.    http://www.lsoft.com/lists/listref.html

» Email Newsletters & Ezines at Tile.net    Large mailing list directory.    http://tile.net/lists/

» I Want Newsletters    A large collection of free newsletters sorted by category.    http://www.iwantnewsletters.com/

» Public Mailing Lists Managed by Arrow    A frequently-updated list of publicly accessible mailing lists managed by users of Roger Smith Software's Arrow Mailing List Server.    http://www.jadebox.com/arrow/list.html

» listTool    A directory of lists that includes an easy way of subscribing and unsubscribing to them.    http://www.listtool.com/

» openSubscriber    A mail-to-web gateway with searchable archives of public mailing lists.    http://www.opensubscriber.com/