GMail team had developed GMail to work even when there is no internet is available.
It is a cool thing to us because we always are not connected to internet. Adding to that it is simply great since we don't have to install anything and it will work in Microsoft Internet Explorer as well.
Check it out by enabling it by going to settings page in your GMail account, click on Labs, select the Enable radio button of Offline feature and press on Save Changes button.
Then a link named Offline will appear in the top right of the GMail page. You can initiate the mail synchronization by clicking on this. It will guide you in setting up the feature.

3. Save the site config file.4. Now you need to edit the web applications' web.config file. Normally this can be found under Drive:\Inetpub\wwwroot\wss\VirtualDirectories\VirtualDirectoryFolder(C:\Inetpub\wwwroot\wss\VirtualDirectories\82)using NotePad or Visual Studio. 5. Find the line maxRequestLength and add executionTimeout in to it as shown below.
6. Save the application config file.7. Do an IIS restart and then your change will be in effect.


3. Click on SharedServices1 (Administration site host) link in Manage this Farm's Shared Services page to open the Web Application General Settings page.
4. Find the Maximum Upload Size property and change it to the maximum upload file size you want. Note that you can put file sizes up to 2GB (2047MB).
Now you will be able to upload larger files than 50MB.