When browsing the internet, you may come across a webpage (or receive an email) with a link to send an email. These links typically use a "mailto:" command, which opens your default email client (e.g., Microsoft Outlook). If the link opens in a different application than you'd prefer, follow the steps below to set or reset your default email app.
...
Set Your Default Email Application:
On your keyboard, hold down the Windows key (located near the spacebar, with the Microsoft logo) and press the R key.
In the Run dialog box that appears, type control and press Enter.
In the Control Panel, locate the View by: option in the upper-right corner. Select Small icons or Large icons from the dropdown menu.
Click on Default Programs.
Select Set default for a file type or link type.
In the search bar, type Mailto (without the quotes).
You will see which application is currently set as the default for "mailto:" links (for example, Microsoft Outlook).
To change the default, click on the current program listed next to MAILTO, then select your preferred application from the options. Click Set default to confirm your choice.
...