Swebbie - 5:44 pm on Mar 9, 2006 (gmt 0)
Opt-in can mean either single or double opt-in. Double opt-in is when you send an immediate confirmation and do not add that recipient until he has responded to confirm. Single opt-in will run you afoul of some spam laws in certain situations. Double opt-in has never resulted in a spam lawsuit. The rest of this is just the same tired old commercial email arguments from 1998.