First and foremost is probably to earn money with PaidMails to call. These are commercial emails for whose reading you get paid.
My absolute secret favorite in this field is a provider that is becoming more and more popular in Germany. Here you have in addition to the normal earning potential through PaidMails, the opportunity with short surveys to earn something for free.
You can also shop here at more than 1,500 providers through partner links and participate in a large cashback program.
As a new user you get the first € 1.95 well written immediately after registration. Here are earned Clix, which can later be exchanged for real money. The more you save, the higher the exchange rate. 1000 Clix correspond to ten euros, 10,000 Clix then already correspond to 150.00 €.
In addition to the usual registration with e-mail and password, you can log in as fast as lightning through your own Facebook account. It is hardly easier.
Attention: Do not be put off by the main page. The offerer is at the same time an on-line savings program, with which one can earn however “only” money with e-mails.