The base url consists of two parts: The Space, and the api base domain
Currently, the easiest way to get this space name is by extracting it from the browser address bar when visiting our Frontend, for example the mailing editor:
Having visited the Mailing Editor for our Myka Space using the URL
https://myka-1.my.inxmail.de/editor/mailings the name
myka-1 can be extracted as highlighted in the example image. The resulting base url for api access is
Trailing slashes are not supported, apart from a few exceptions. For example, a call to
https://myka-1.my.inxmail.de/editor/mailings/ leads to an error.