There's unfortunately no parameter available to automatically mail out the pushfile to a specific email address upon running LsPush.exe. We'll add this feature to our customer wishlist. At this moment in time we can't guarantee that this feature will be implemented though and we aren't able to provide you with an estimated release date.
We are currently working on a solution that will allow LsPush to function over the internet, which would forego the need for this automatic mailing. We don't have an estimated release date for this either unfortunately but it is in active development.