I have used several types of access:
- https://mail.google.com/mail/x/
- https://mail.google.com
- https://mail.google.com/mail/?ui=1
- https://mail.google.com/mail/?ui=2
- https://mail.google.com/mail/h/

And of course Nokia Messaging application. This at least provides an alert as a message comes into your inbox. The web access URLs give no alert.

Try them all, and pick what works best for you. Helpful to "stay logged in"