For more information about a specific list, including subscribing instructions, send an email:
To: LISTSERV@LISTS.SIERRACLUB.ORG
Subject: [this line is ignored and may be left blank]
Message:INFO ListName
The ListName is the name of the list you're interested in.
The list you are subscribing to may require a confirmation of your subscription so that the LISTSERV is sure that your email address is valid. Follow the instructions contained in the confirmation request.