have heard a lot about the gmail push for iphone , that is is very good application and easy to hand and manage the mails from there. Truly speaking I have no much idea about the application. I have not installed it before and so i need some help from your guys. What is the application and how does it works, also I would like it to work on my ipad. Is this possible? Thank you. 

Google’s push for GMail via GoogleSync, which itself uses Microsoft Exchange ActiveSync). Push can be likened to a permanent connection between servers and Apple’s iPhone, which uses resources on a regular basis. To activate the service on your device, you must register your GMail account as an Exchange account. I think you should try using this application, it is great. 

Re: GMAIL push on iPad
You can rather go for GPushed, GPushed is an application available for a few days in the AppStore that adds push email notification. As soon as you receive new e-mail pop-ups appear with an overview and an icon on the program with a badge. Configuration is very simple, since all you have to do is to run the application, enter information for the Gmail account and save the settings. Recall that the Push Notification require the battery and that continuous monitoring can be enabled via the settings. In this case, Gmail will push open a connection only when the server has detected the presence of new messages. 

Re: GMAIL push on iPad
With the release of the iPad , apple launched an experimental interface consists of two components in order to take full advantage of its large touch screen. Based on the Web application, this new interface to your conversations and messages left to right. All the features of Gmail that you know, like offline access and caching, are present on the version iPad. The shelves are very new, so expect to change while we optimize this new format. 

Re: GMAIL push on iPad
For the configuration of gmail push you can follow this 

1. Open the application settings
2. Go mails, contacts and calendar.
3. Press add an account
4. Select microsoft exchange.
5. In the email field, enter your full email address.
6. Leave the field empty
7. Enter your full email address in the username field
8. Enter your password …
9. Press next on top of the screen.
9a. Choose whether to accept a dialog box appears.
10. A new field “server” appears. Type the server google m.google.com.
11. Press again on next.
12. Select the Google services you want to sync with your iPhone.
13. If you do not want to delete the existing contacts on your iPhone select “keep my existing contacts” when the dialog box appears.