Not sure about the xls stuff
Acrobat can make a Form that you fill out and it emails itself home – takes full up Acrobat to make the Form – I did one several months ago just as a proof of concept – can’t remember the full details and if the form showed up by it’s self or if it was some type of survey and did some sorting once it got home – sorry memory is a bit fuzzy.
If you have full up Acrobat worth taking a look at – Adobe also lets some things be made one at a time on their web site I think so might be doable even if don’t have full up Acrobat.
I have Adobe forms that I grab off a web site for turning in time and they can also be emailed – built into the form – Take a look at Acrobat options.
I think there is also the ability to make a form that is right in a Post – needs a Plug-in –
If you want more info on including a Form on a Post or Page best to start a new thread – maybe in Plug-in’s as to what form Plug-in works best