Mass email sent and info pulled from back of a site


Does anyone know about mass emails. Where a email is sent by a user, from let say (goldmine) to their clients, and all the content is loaded from the back of their site???..or something like that? Im really not sure how it works or how to go about it. Does anyone know of resources that i could read up on?

thanx in advance

[edit] not a spammer…lol :azn: [/edit]