The Syncthing v0.14.50 release candidate one was just released. It includes initial support for receive only folders: https://docs.syncthing.net/users/foldertypes.html#receive-only-folder. Go hammer on it, and lets iron out some bugs before the actual release?
I’m taking care of the implementation on Android, see issue:
If someone likes to do more intense testing the new syncthing v0.14.50rc.1 on Android and provide feedback for that platform, a debug build is available at https://build.syncthing.net/repository/download/SyncthingAndroid_Build/24967:id/apk/debug/app-debug.apk . I’ve submitted it for review in PR https://github.com/syncthing/syncthing-android/pull/1211 .