Hope I am in the right thread.

I was wondering if there is a way to setup mail for exchange so that when I get an email.. it downloads the whole email to my phone.

Rather than just the header and then when you click on it then you gotta wait for the email to download.

it would be good if the whole email would download straight away and then I can browse through them when I am not connected .. like in the train or something.

Data allowance is not an issue for me.