Mac mail doesn't support rss feeds, but Thunderbird does (it does e-mail, newsgroups and feeds).
Or Firefox with the Wizz rss extension.
Gmail and Yahoo!mail beta(Firefox or IE, NOT in Safari) have a rss feature.
There is some kind of rss function in Safari.
"Recording exactly what a musician hears turns out to be a really big deal." Bob Olhsson
"Who cares about efficiency, when we're talking about music?" Rupert Neve
"it'll sound different through a microphone, anyway" Keith Carlock
"no room, no boom!" Michael Wagener