Either build up your list from scratch, or buy from list brokers. I don't suggest list brokers because most people who receive your emails will end up reporting you as spammer.
The easiest way is to build a list of 100,000 subscribers. As others pointed out there are no shortcuts unless you have something valuable to offer to another marketer with that size list who would send out a mail for you. Then again you said "per day" and that isn't going to happen everyday so get started collecting those names and addies now.
You can take alook at ezine solo ads but alot of them don't contain a list of a 100,000 people. Do you need to mail 100 thousand people?
Many hosts will block your domain from their guests receiving your emails. That means gmail, hotmail, yahoo, aol, etc... If you are criminally sending the mail as spam you can be fined very large fines. They can take your domain and your freedom if the spamming is wide spread. Once you get blacklisted it is nearly impossible to fix this. Besides that nothing will happen, send away
Well if you want fast results you can rent a list, but if you want effective leads then you should create your own list.
first you need a HUGH email list,... after that you can sending the email using software that you can find here hope it's work,...
there's a double opt in lead emailer program you can email 100,000 per day, just launched by the biggest phone broadcasting company on the net, ive been in the program myself for 2 years, its 5 years old, they just launched an emailer program that has double opt in leads loaded into it every month free, 100,000 of them, plus you may upload your own opted in leads, currently its running on 12 servers, email me for the link, im new here and not sure if you can post links so just email me , im using it now and getting great results, best emailer ive used to date with the most options etc, you can even put it on auto and the tech dept will email the leads for you if you want
You can build you own list (which would certainly take time), you can buy solo ads in ezines, you can get people to JV with you and send out mailings for you, if you have a list you can adswap. That's all the whitehat stuff I can think off the top of my head.
site is 777hc.info takes you right to the site i email 100k per day using it and it comes with 100k double opted in leads each month
Check out 2nd site in my signature There you can send e-mail to 3 000 random members every 3 days. If you buy better membership than you can send 6 000 e-mails every 3 days.