thx for all your answers. 
So Electrum does not automatically saves my "send" label to the change address. Why is that? Out of my sight every label "needs" to be named by the ones who knows of this address. So wouldnt it be better if electrum saves automatically the sending/transaction label to the change?
So Electrum does not automatically saves my "send" label to the change address. Why is that? Out of my sight every label "needs" to be named by the ones who knows of this address. So wouldnt it be better if electrum saves automatically the sending/transaction label to the change?
Well, on a technical level there is no "need". Labels are for your accounting purposes only, it's completely irrelevant (and unknown) for the rest of the network.
Personally, i'd rather not have my labels saved on any external server, eventough the encryption seems good (at first sight).