Thank you all for your answers! Now I know what to do.

Hi there,

I want to post a Bitcoinadress to recieve donations while useing Electrum as a wallet. I already found out, that sending BTCs to an "old" adress ist possible but not recommendet because of the possibility of tracking your past payment.

Which of the adresses used in Electrum should I use? The ones on the Top? Do I have to do anything else to "save" that adress?

Thank you for your help and sorry for the noob-Question.

Very best

Chris