/// <summary>
/// Determines whether [is unique email] [the specified email address].
/// </summary>
/// <param name="emailAddress">The email address.</param>
/// <returns>
/// <c>true</c> if [is unique email] [the specified email address]; otherwise, <c>false</c>.
/// </returns>
public bool IsUniqueEmail(string emailAddress)
{
int emailCount = _resource.EmailAddressCount(emailAddress);
bool isUniqueEmailAddress = (emailCount == 0);
return(isUniqueEmailAddress);
}