If you use Gmail's WebMail as your Mail Client, the following instructions will help you configure your web browser to use Gmail for all email links.
Navigate to https://mail.google.com.
Click on the gray double diamonds on the right side of the location field next to the bookmark star.
Select Allow to allow Gmail to handle all email links.
Disabling using Gmail in Google Chrome
To change having Chrome to open mailto: links in Gmail, type chrome://settings/handlers into the location field. Set to (none) or click remove this site, then click Done.
Safari does not have built in support to change the mailto handler. We suggest the mailto-chromeextension. Follow the download link in the Readme.
Click Trust to install the mailto extension.
Clicking the Options checkbox will open the Options screen
On the Options screen, choose your mail service and then restart Safari.
Disabling using Gmail in Safari
To change having Safari open mailto: links in Gmail, navigate to Safari > Preferences..., select the mailto: extension. Click Options to change the Option to your prefered setting.
To Uninstall, click the Uninstall button.
From the Firefox menu, select Preferences... or naviagate to about:preferences#applications
Search for mailto to find the Content Type
Click on Action dropdown and select Use Gmail.
You can close the Settings tab.
Disabling using Gmail in Firefox
To change having Firefox open mailto: links in Gmail, change the Action back to your prefered setting.