REVIEW or, “I’ve lost a listmember’s address”
Any subscribed member can find the address of other subscribed members, send the command:
REVIEW ATCA BY NAME
This will return a list of everyone who is subscribed to the list. Note that this is available only to those who are subscribed to the list — even if they are set to NOMAIL. It is not available to spammers, unless they are subscribed to the list (and this will not happen!). If a list member ever did spam the addresses on the list, they would be promptly removed from the list.