Email validation using ESL SDK to prevent runtime error in package creation

Is there a way to use Silanis SDK to validate the signer's email address prior to actually creating the package? The email validation of the SDK during package creation seems stricter than usual email RegEx validations, and recognizes only a set of valid top-level domains. Would be good if we can leverage same email validation during data collection from user inputs. Otherwise, we bump into similar exception like the one below later in the [package creation] process.

An unhandled exception of type 'Silanis.ESL.SDK.EslServerException' occurred in Silanis.ESL.dll
Additional information: Could not create a new package. Exception: The remote server returned an error: (400) Bad Request. HTTP POST on URI https://sandbox.esignlive.com/api/packages. Optional details: {"messageKey":"error.validation.invalidEmail","message":"Email address is invalid: '[email protected]'","code":400}