Configuring the 'Mailto" command in Windows 10

Microsoft sets its own Mail application as the default email client in Windows 10. This means that when you select an email link, the Microsoft Mail application opens by default. However, you can change this behavior by configuring either system-wide or protocol-based email settings within Windows 10. To do this, follow the directions below.

Setting the "Mailto" Protocol System-Wide

  • To set your preferred email client as the system-wide default, go to |Settings|Apps|Default Apps| within Windows 10. In the right panel, under the Email section, select the email application you want to use as the default.
System-Wide Default Email Client Settings

Setting a Specific Protocol

  1. You can also configure a specific application for the |MAILTO| protocol independently of your system-wide default email application. To do this, go to |Settings|Apps|Default Apps|, scroll down, and select "Choose default apps by protocol".
Protocol-Based Email Client Configuration
  1. Scroll down and locate the |MAILTO| protocol, then select the application you want to use. To verify the configuration, open OA Mobile and select one of the email links. If configured correctly, the email link should open using the email application assigned to the |MAILTO| protocol.
MAILTO Protocol Configuration
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