This plugin does exactly what I was looking for.
I have an issue, no matter my settings, the form is alway emailsent.php.
But I did the trick, I deleted emailsent.php and renamed emailandname.php and that does the work.
By the way, it doesn't find my own template at theme root as ssd-mydownload.php either.
Anyway, I recommend this plugin, nice and simple and I'm sure the author will fix the issue.