More granular "save addresses"

I love the “save addresses” feature but honestly it gets a bit overwhelming since it seems to save everything. Really I only want it to save my actual physical mailing address, but it also saves all my e-mail addresses (I use so I have one for every site I visit), and even previous ‘subjects’ I’ve put in text boxes before.

Ideally I’d want it to only save physical addresses, but I can imagine others might want normal e-mails: I’d be happy if I could just turn off e-mail address saving.