Some of us use Gmail most of the time and don’t use desktop Email application at all, in this situation if you click on a mailto: link in web pages or in applications it will take you to the system default client like Outlook which you don’t use.
While Internet Explorer and Firefox allow you to set Gmail as your default Email client, till now Chrome didn’t allow that. You need to copy that email and open Gmail compose window and paste that email address. But now you can set Gmail as your default Email client in Google Chrome.
If you open Gmail in Chrome starting today you will be asked whether you want to Gmail to open all email links. You can say yes to set Gmail as your default email, after that whenever you click email links in any application on your system will open a Gmail compose Window.
To set Gmail as default email program in Firefox is pretty simple, go to Firefox –> Options –> Applications tab, search for mailto or use the scroll bar, and select Gmail from the drop down menu below the action bar.
Source: Google
