Update: If you have problems accessing the download site using your browser, use the "Services" browser (the wap browser) located in the "Media" folder.
Google today announced a java application that runs on the Nokia E61 (and the rest of the E-series devices) that delivers the look and feel of Gmail.
Just go to gmail.com/app with your browser and download the application. If you don't have a Gmail account you can sign up for an account from gmail.google.com. An activation code will be delivered via SMS.
According to Google the application provides up to five times faster access and use of Gmail thanks to automatic pre-fetching of messages. I'm not sure it is five times faster but it feels rathar snappy. The application is also optimized to reduce the number of clicks of keystrokes used to scroll, compose, search and read email.

I don’t like using gmail from the web interface or from the gmail java client. I wanted to use POP/SMTP to get my gmail. Here is how I got POP3 gmail to work with the E61’s Email Client.
1. Log into your gmail account and change your settings to allow POP3.
2. On your phone, set up a new email account as normal.
3. Set up the incoming/outgoing settings as follows:
Incomming:
User name: The email address you typicall use to log into gmail. I.E. “your username”@gmail.com
Password: The password you typically use to log into gmail
Incoming mail serv.: pop.gmail.com
Access point to use: Your choice
Mailbox name: Your choice, I choose “Gmail”
Mailbox Type: POP3
Security (ports): SSL/TLS
Port: User Defined / 995
APOP secure login: Off
Outgoing:
My email Address: Your gmail email address
Username: Your gmail email address you typically use to login
Password: Your gmail passwork you typicall use to login
Outgoing Mail serv: smtp.gmail.com
Access Point in use: Your choice
Security (ports): SSL/TLS
Port: User Defined / 465
That should get it going. You can customize how mail is stored on gmail from the gmail settings page. You can also set up auto retrieval from the settings on you phone. Just poke around the connection settings on your phone to see all the options. They are pretty self explainitory.
It doesn’t work on Nokia E65 with just the jar file, displaying error at starting application:
Network Error
java.lang
IllegalStateException:
This method is not
supported in com.nokia.mid.ui.FullCanvas
It works having the jad file as well in the same directory.
It’s important modifiying applet name here and the size of the jar file!!!
(You can modify applet name changing it in the jad file and in manifest.mnf(in jar) file.)
[...] that runs on E-Series phones and provide the look and feel of gmail. There’s a thread here on how to configure the [...]