Invalid certificate

Is this trusted? When i click on the blue “Open E-Mail(German: “E-Mail öffnen”)” button it will link me to this website:

https://i.imgur.com/F29BbDQ.png

Hi,

What is the full URL in the address bar? I take it you are being redirected to http://hotmail.de (non-secure) instead of https://www.hotmail.de (secure).