I execute what the client wants to offer. And the goal is to add a button with a link in the newsletter that refers to the other language. So, I still have my question: How is the read online url created? I would think it is something like:
/en/component/acym/archive/id-alias. THanks for feedback on that matter.
_"if you change the language of the website, AcyMailing will show newsletter in the language of the website"_
This doesn't seem to be working, because the id-alias is in the url, so simply changing the language, does not work.