Make money through reading emails

This is another type of earning little money. I do not trust much this scheme and we can not depend on this also for a steady flow of money. The scheme of operation would be like this. You have to register yourself with some organisations and these would be sending mails to you. you have to open each mail and read. Or atleast spend few seconds with each mail as if reading. Then you get some points. you have to redeem these points. The return for each mail is very very small. Redeeming points is also not encouraging. You can invite traffic from other sites to your site , using these earned points. This is a big time consuming job and not worth trying. Bogus companies are more in this.