We are looking for someone that can send out several e-mails per day, preferably to people that are interested in certain products / services. We want to do very high volume, does anyone have list or could give me some insight on this?
It's hard get other people to mail for you unless you have something very valuable to offer them in exchange. I would try Nextmark if you want to buy a list. You can search through different categories there.
If your going to buy a list, be aware that what you are doing is spamming. Start your own list, get users to (double) opt-in, and give the usual unsubscribe , your address (etc).
I assume you have the list already and finding someone to send them out. If you got them by legit process like opt-in then there are plenty of email marketing services. You may consider these ones. iContact - Email Marketing Software Email Marketing for Small Businesses | VerticalResponse Email Marketing Solutions from Constant Contact However, if the list you got are not legit. I am not sure if you could use those services anyway.
There are some different types of software out there that can gather email addresses from various websites in which you can then email them at a mass, but you do have to be careful that your email accounts don't get flagged from spamming.