How to delete your T-Online account

Login, use the deletion link and off you go.
URLS:
http://www.t-online.de
https://kundencenter.telekom.de/kundencenter/registriert/dienste-abos/ngcs/deregistrierung/index.html

Please note that AccountKiller.com is not associated with the business listed on this page. AccountKiller provides easy-to-understand instructions and guides on how to cancel charges and relationships from the list of businesses on our site, we have no affiliation with these businesses.