Set Gmail as default email application

Windows Default App: Set Google Chrome as MailTo Default App

• Click Start menu, select Apps in the sidebar, and click Default apps.
  • In the Set a default for a file type or link type search box, type: MailTo
  • Click the current default (either blank or Outlook) and change it to Google Chrome. Click Set Default 
• Close Settings

Google Chrome: Change Chrome settings to open GMail.

• Open a new Chrome window or tab and in the URL type: chrome://settings/handlers
  • Confirm that "Sites can ask to handle protocols" is selected.
• Open GMail in a new tab
  • In the Address Bar, on the right sideclick the icon that looks like two diamonds.
  • Select Allow 
  • Select Done.

Any MailTo links will now open in Google Chrome, in a new tab.