On Sat, 4 Sep 2010, Paul Grenyer wrote:
I'm very happy with gmail.
A slight caution... gmail uses servers outside the UK, and therefore is not bound by the protections for users' privacy contained in the Regulation of Investigatory Powers Act 2000. See the mailing list thread starting at http://mailman2.u.washington.edu/pipermail/alpine-info/2010-August/003532.html.
I'm guessing gmail is not alone in this.