Gmail Mobile
The other day I was commenting how Gmail did not have a mobile client. Then after reading through the Gmail hacks article in Make Vol. 1. I noticed there is user created Gmail wap site, not endorsed by Google of course. All you have to do is download Gmail Mobile from sourceforge.net and install it on your web server. One capable of PHP.
Don’t have a web server or you can’t run PHP? Well if you trust giving your password out to someone else you could use GmailWireless.com. Also not endorsed by Google.
I tested this out on my Vizaweb account and Sprint Sanyo 8100 phone. Works like a charm.