The service validates email addresses under the internet domains used by Brigham Young University. It accepts a character string as input which it compares against records for the buy.edu and byu.net domains. The system response either confirms that the address string submitted is associated with a BYU user account or an error message that the address is not recognized.
API methods check whether a submitted string identifies a properly formatted email address in domains managed by BYU. It then checks the specific address against the university's login databases to confirm whether it is registered for a user account there or whether it forwards to a valid BYU address.