Forum email notifications contain a link like this:
https://discourse.test.opensourceecology.de/t/ose-dorf-anforderungen/60/3
which requires login to view the link. The problem is the „p“ and „e“ parameter. To view the thread without login, the link should be like that:
https://discourse.test.opensourceecology.de/t/ose-dorf-anforderungen/60/1
TODO: Transform the link as described above.