How to check if the file is sent or not ?

I want more assurance my important document was sent than just seeing it on a list.  Not sure why this question is so difficult.  When I send a doc for signing I get an email that it was sent.  I'd like the same with Send and Track because I don't trust

Track and send sounded like a great solution initially.  I sometimes email documents and sign affidavits regarding when and where I emailed them.  The problem is, other than your list saying it was sent, I don't have any actual proof it was sent.  It doesn't show up in my send email and Adobe doesn't send me an email that it was sent.  If they open it, great.  I've got some proof, but otherwise it seems I have nothing.  Am I missing something here?  It almost seems I'd be better off just emailing it.  At least then I can save my sent email.  Any help is appreciated.