Just a couple of minor points:
If a user has multiple addresses, some set to no mail, all the addresses will receive monthly password reminder email unless the address's options have Get password reminder email for this list? set to No.
When moderating a held nonmember post there is a checkbox and radio buttons
Add marksapiro@gmail.com to one of these sender filters: Accepts Holds Rejects Discards
so it is simple to add the address to one of the *_these_nonmembers lists while acting on the held message. Adding the address as a member and then setting it to nomail and perhaps setting its Get password reminder email for this list? option is two or three more steps.
-- Mark Sapiro <mark@msapiro.net> The highway is for gamblers, San Francisco Bay Area, California better use your sense - B. Dylan