What's a good/free e-mail service that will work with my Blackberry browser tool?

My corporate enterprise e-mail works great. I have my corporate e-mail synched up with my Blackberry (BB). This is how I get 90% of my mail.

However, I have about another 10% that I just don’t want hitting my corporate e-mail server. Would like a web mail that works with my BB or BB Browser.

Is there a good e-mail service that lets me log-in via the web browser and allows me a chance to navigate via my BB web browser? My Comcast account doesn’t work with my BB browser, so I want to make something else my ‘personal’ account that works with my BB.

Got a factual answer and maybe a supporting recommendation to supplement it?

Close this thread, if needed.

I grabbed ‘‘Yahoo! Go’’ and it integrates my Yahoo mail into a separate function on my Blackberry. Actually, Yahoo! Go is pretty handy overall, aside from just having access to my Yahoo mail via my Blackberry.

I use gmail for that purpose, and it works pretty well for me. I actually have a separate gmail program and icon for it, as well as being able to go through the browser to use it, if I feel so inclined. Google actually has a lot of good stuff for the Blackberry, such as access to Google maps, search, and news from individual icons on your main screen, with no need to open the browser.