RSS By Email Plugin??? No Signup Required?

I am basically looking for a plugin that will allow users to enter their email address to get my feed by email.

I don’t care about ME having to sign up (to track stats or whatever), I just don’t want the people that put their email address in be required to sign up somewhere.

So I was thinking a localized (just within WordPress) plugin might meet those requirements.
Just an email box, with no signups required.

Any of you aware of such a thing? All I can find is stuff such as Squeet.

I have read of feedburner (Not a plugin, I know), but does it require registration for the users?