What email do you mean? 

Impressum@cco2online.de

There is a . missing after the cc but this address is not a valid address for customer services. In any case you need to send in the form and documents to show that you have left the country.

https://static2.o9.de/resource/blob/67636/1514edef53eb4184657eaca1f67ca03a/contract-cancellation-moving-abroad-download-data.pdf

But maybe you know the right email ? 

There is no email address. You will need to send the signed form and the documents by post or fax (as stated on the form).

impressum@cc.o2online.de 

Hi @Tomas.pilnikovas,

welcome to our English community.

Thanks for your message that you like to cancel your contract because you moved abroad.

Did @bs0 already give you all needed answers?

If there is any further question open for you, just contact our English community again.

Loving greetings,

Tobias