Back in 1998 we ran a very large operation that sent out around 600,000 email newsletters each day. we used seven servers connected directly to the backbone in Atlanta down in little five points on Marietta street. Trust me when you go down there to fix a server at 3:00 am, you take your buddy and you both are armed since it was 3 blocks from the Marta train station. Lots of bad actors at that time of night. We had five Unix servers sending out the email a two NT Servers processing all the removes and bad email address. NT sucked big time. It crashed weekly and the Unix servers only crashed once time in 2 years because of a faulty disk drive. We were using email addresses that we collected. We were hosted by a major hosting company and we told them what we were going to do. Our server suite cost us $3,500 per month and the hosting/ISP told us if our complaints were low, the would let us continue. We set up a system so our complaints were under 10 per month sending out 600,000 emails daily to a collected list. We did that for two years. My financial partner pulled out after two years and we closed it down. It was fun while it lasted but a lot of work. We sold advertising space on the newsletter. From then on, I stuck to very targeted email and don't even do much of that anymore. For now I am trying to learn how to make money on youtube. Some of the toy box opening channels are cleaning up in income from youtube. One woman's channel funtoyzcollector is earning over $1,000,000 per year. amazing.