edit- cliffs at the bottom for u lazy people I'm trying to find the best way to send out around 10,000 copies of an email (and I know what you're thinking, it's not spam, some of these people were actually really pissed offwhen some got my 1st attempt and they didn't). We're trying to send out special discounts and newsletters to our customers that chose to recieve them (similar to amazon, vistaprint, overstock etc.). My first attempt didn't go so well. I used a php script called webinsta, (which seemed like a well written sript). I think it may actually be the mail server we're running, it's the free version of mail enable running on a windows server, and it had like 1000's of qued outgoing messages and the machine was just about maxing out it's resources (and I've never even seen it using more than 10%, it's only running 1 somewhat high traffic site) . Restarted the server and deleted the 1000's of qued messages, tried sending it out again in chunks of 500, it was just a big mess. Word got out on a forum of the discount code we sent out and we seriously got at least 20 calls in one day from customers bitching about not getting it (people that I know were on the list), hell I was on the list and didn't even get my copy. What's the correct way to do something like this? I have root access to the server running windows 03/iis 5 (does have php installed too) and the free mailenable mail server that was installed with plesk. Do I even have to use the mail server? Mail servers are one of the few things I've never really messed with. I was about to write a little asp script to loop through my db and figure out some way to rig it up to send 1 like every 5 or 10 sec (like throw it in my global header include file that gets called about 50,000 times a day). There's got to be a better way. Need a better mail server? The mail enable server is kinda nice for our normal email (around 25-30 accounts) bc it's integrated with plesk and just one less thing for me to have to deal with (plesk makes my life a little bit easier ). Getting pissed off trying to find any info about it, I guess it's such a hot google keyword, all you find is bullshit spamming companies, mail lists for sale, you name it. wow didn't mean to ramble that much...let me make some cliffs. Trying to send ~10,000 emails from a windows server with root access. First attempt using a php script and mailenable (free version) was a disaster, crashed mail server and about crashed the whole server period. Best way to do it?