def get_help_keys(self):
        """
        Returns dict of help_context keys (description texts used in `EmailRegistry.register()` method).
        """
        help_keys = {}
        for k, v in self.help_context.items():
            if isinstance(v, tuple):
                help_keys[k] = v[0]
            else:
                help_keys[k] = v
        return help_keys