Customising hostname sent in email links for app deeplinking

[merefield (Robert)]

@antin_102

In our scenario, we have developed a mobile app which uses deeplinking so https_example.com will open the app. From the app, the user can access our (self hosted) forum which is available at https_forum.example.com and is launched via the app and opens the system browser and uses Discourse Connect for SSO between the app and forum.

The whitelisted app can be deployed in such a way that it associates links correctly and deep links into the Discourse instance via the app. Why does your app have to be different?