How many times did you see an ad claiming it could process anywhere between $ 5 and $ 25 from e-mail? They say that you can process as many emails as you want and earn an unlimited amount of money every day.
What they do not say is that the emails you send are actually ads and that people buy what they offer in advertising to be able to pay. If you notice a few if not all of them ask for a non-refundable fee. You will also notice that this fee is usually the same amount you will pay to process emails related to them. You see? The person who sent this email will only pay you if you sign up to earn money by processing the emails and send them the registration fee. So instead of paying $ 25 in the EVERY email you send, you only get the money if someone responds to your e-mail ad and pays. This means you'll probably have to send 50-100 ads anywhere to get one who is interested and actually paid.
So now, as you can see, it's not so easy to earn money as you believe it. You really have to work with that $ 25 payout. If you've been trying to make money online with anything else, I'm sure you know how time consuming and expensive it is to place ads. There are free advertising methods that are ok, but mostly to make money on the internet or anywhere, first money (at least a bit) to spend.
If you really want to monetize online emails from home, you should look for a program that is free to start. At least you can see that this is something for you. Many people spend money to subscribe to certain programs just to find out they need to spend more money as they come in. Or they pay their prizes and it turns out they are not as easy to earn as much as they believed. Every business has extra costs, advertising is great, but these costs do not have to be great. It does make some mistakes and mistakes to figure out what works for you, but once you do it, you always have the knowledge and you can use it again and again to make money.