Requestbox (rbox.app) has been assessed as not falling within the scope of the Online Safety Act. It does not fall within any of the three categories.
User to user: Although the site allows user content to be stored, it's basic text content and isn't publicly visible unless that user shares their request box storage with someone else.
Search: There is no search functionality.
Pornographic content: There is no pornographic content provided by the service. Users cannot upload images, videos, or audio to the site. This category does not apply to text content.