DaveAtIFG - 5:36 am on Nov 26, 2000 (gmt 0)
Welcome to WebmasterWorld thepunter! My hosting service includes a pretty complete mail list manager so I have no recommendations, only a couple suggestions. I saw a discussion recently about Post Office [web-consult.com] which may meet your needs. Unfortunately, no one in the discussion had first hand experience with it.
Another suggestion is to dig thru Script Search [scriptsearch.com]. They have over 5000 scripts listed, many are free.