Everyone thinks that to make money on the internet, that you have to sell something.
For the past 16+ year, I have been promoting PPL (pay per lead) offers. The reason why is very simple...there is no credit card / purchase required to complete an offer. All a user has to do is fill out a form, so conversion rates are typically much higher than offers that require a sale.
I favor PPL offers that have a make, get or save money angle / benefit to them. This is what has overall worked the best for me and tends to have the greatest amount of mass appeal, so the potential to produce high volume exists.
There are many PPL offers that pay $40-$60 per lead that work well on front-en campaigns. There are those that pay less and more. The payout is not the sole determining factor. You can have an offer that pays $8-$9 and if it converts at 2X+ of a $20 offer, then it's going to perform about the same. On the other side, you could have an offer that pays $90 and if it converts poorly, it may not even be worth running. So don't get caught up on just the payout.
Examples of offers: Insurance, education, mortgage, loans credit, assistance, etc...
Also, it's importance to split test offers. In any vertical, there will be offers that out performs all the others. If your not testing to find which have the highest conversion rates, you will likely be leaving significant money on the table.
With any offer, you still need to be able to generate traffic. I have always generated traffic through buying targeted data(email). That way instead of paying for traffic, I'm building assets that I then own and can market to over and over. That way I then own the traffic and can generate it on demand. I do the following to do this...
I buy fresh / targeted data that I know what the users are interested in and there's a PPL offer that matches their interest.
I generate real-time co-reg that targets specific PPL offers.
I buy aged / domain targeted data. However, this is a bit complex and and there are additional tools / resources needed and not really recommended for the beginner.
Last but not least. I get get (fresh / targeted) rev-share data, which is data that has $0 upfront cost and then I split the revenue generated from it with the list owners.
All of this is completely can-spam compliant, as the users have all given permission to receive messages from third parties and with co-reg, the users are requesting more info directly. So none of this has anything to do with spamming.
With any data that you purchase, it's rarely going to be as responsive as a highly targeted opt-in list you develop on your own. So to compensate for this you have to work with volume. This isn't a big deal. as buying data is much quicker and cheaper than building a list. The key though is to always be collecting your opens / clickers and removing the non responsive users. That way you are then building a smaller, but very responsive list that you will eventually send less and make more with each mailing. Plus your reducing your sending costs. Basically your converting it from quantity to quality.
This by no means passive income, as it takes work. However, you can hire inexpensive VA's for like $2.00 per hour and up and train them and then you just oversee the operation. Plus you want to use VA's any way, as they are the most cost effective way to scale the business.
There's obviously more to it, but it really does work. Everyone that I know that is in the business and knows what they are doing, does 6-7 figures. While that is a huge range, much comes down to ones ability to scale and effectively manage the infrastructure that comes with scaling.
Anyway, something to think about.