Thanks! I will read their site later on.
Just a few quick questions in case any one has the answer about poMMo.
1) first, sometimes, the mass email out may have many dead email addresses in the list. I am using qmail, so if I use poMMo, would these emails sent to dead email addresses will stay in my qmail's queue and keep on trying to send until they are expired? This is one of the problems I experienced before when using mail() to send mass email.
2) second, when mass emails are sent out, they get more chances to be marked as spam even they are to the real subscribers, specially, when you run this script from a sharing server. will poMMo be helpful in this case? or no different than mail()?
3) what i am doing now, is managing the list (subscription, unsubscription etc.) from my own site, but stop using my own mass mail program. Instead we offer the list, the the html page we want to mail out to to professional mail services, these kind services are getting cheapper and cheaper now. Of course, keep the mail list accurate and up to date is our duty. And any online subscripion has to be online confirmed before add to the list, to reduce the chances that be market as spam.