Windows 10 automatically selects certain programs as default apps – that means it’s the program that will open when you want to do a specific task like edit a document or photo or send an email. For example, the Mail App is the default app for sending an email and Edge is the default browser. But you can easily change that. Start by typing Default Apps into the search box and clicking on the results
Default apps settings will open.
You’ll see a list of tasks and the apps assigned to them. We’ll start by clicking on email.
Then choose the app you want for the job.
Scroll to the end of the list to set defaults by the type of file or by the app.
For example, choose a particular app to open .jpeg or .txt files. Or you could select an app and assign tasks to it.