E-mail the sender at T-Online block
So you don't get the annoying E-Mails in the first place, then you can set up the mobile service provider T-Online is relatively straightforward a lock for the corresponding sender. The T-Online via the so-called "negative list".
- After you have logged in to your Account, go to the menu Button and select "settings".
- There you will find on the left side of the sub-area "E-Mail".
- Click on "spam protection". Then you will be offered three ways in the future with the one you marked as Spam mail.
- To the sender to permanently get rid of, is the first and most radical Option "Directly reject and delete."
- This measure has two advantages: you get more in the future, the Mails of the sender to see, and on the other, the sender is automatically informed about the shipment of his E-Mail is failed.

E-Mail the sender at T-Online block
Have you, yourself, rush to a Mail sent, and would now like to undo, will help you under certain circumstances, our practice tip "T-Online: E-mail call back - is that possible?" more.