A few days ago I asked if there was a service that could turn my email into an RSS feed. The answer is “yes”.
Keep Up With Specific Emails Via RSS. Mailbucket will pump any emails into a feed that you forward to firstname.lastname@example.org. Just create an Outlook rule against whatever (e.g. emails from particular senders) and get the sent out to a feed once they come in. Just keep in mind that such feeds are unencrypted and can be consumed by others.
I have not had the chance to look at this yet. Will report back later.