To change the default email app in Windows 10, open Settings > Apps > Default apps and choose an application under Email. This controls how Windows handles email links; it does not change your email address, Windows sign-in account, or default From address inside a mail app.
Choose the email application
- Install and open the email app you intend to use, and complete its account setup.
- Press Windows + I, then select Apps and Default apps.
- Under Email, select the current choice or Choose a default.
- Select the installed email application from the list.
- Test an email link and confirm that the expected compose window opens. You do not need to send a message for this test.
Microsoft documents the Windows 10 selection under its default email program instructions.
If an email link opens the wrong app
In Default apps, open Choose default apps by protocol and check MAILTO. That association controls standard email-address links. A browser may also have its own website protocol handler, so check its settings if behavior differs only inside that browser.
If you want Gmail or another webmail service
A website account is not automatically an installed Windows email app. A browser that supports a webmail protocol handler may offer to send email links to that service. Follow that browser and service’s instructions; selecting a different Windows email app alone does not register every webmail website.
If you meant a different sender address
Choose the From address or default sending account inside your mail application. That is independent of the Windows default app. Changing the app also does not move messages or alter passwords.
If your app is missing
Confirm that it is installed correctly and supports handling email links. Reopen it and check its default-app instructions. On a managed PC, an organization policy may enforce the selection. Missing from the list does not by itself prove the application cannot run on Windows 10.
Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
His work can be found on many websites and focuses on topics such as Microsoft Office, Apple devices, Android devices, Photoshop, and more.