I have Windows Mail and use filters as well to sort emails to specific folders - it's really the only way to go. I get so many client emails that I'm certain they'd get lost if I didn't have them set to sort automatically. I have Yahoo account that I use when I want to sign up for 'junky' stuff and I use mail2web.com when I'm away from my laptop but need access to email on the server.
I've not yet heard of this NEO program but it's cool that they have a
free version.
Have you installed it yet? Let us know how it works for you!