I myself have begun using my Opera browser a bit more of late, and I'm also trying to get to know the built-in email client better (which I'm using for mail and RSS feeds).
Btw, as I'm sure you know, Opera (which took over ownership of the FastMail service) also has a beta webmail (myopera.com) being developed by the FM team, and it's shaping up nicely. Boy, is it fast. Instantaneous, even.