Telekom Search Ecosia

To add Ecosia as a serach engine on Firefox right click the url bar and click on the option Add "Telekom Search Ecosia".

Image of the context menu, which appear on rightclicking the search bar, where on can add the serach engine

Now change the default search engine to "Telekom Search Ecosia"

Now every Search made with this search engine is attributed to Deutsche Telekom and contributes to the partership.