The software maker confirmed to The Verge last week that it’s “experimenting with a small set of users” for the integration. Microsoft is also experimenting with bringing Gmail, Google Drive, and Google Calendar support to. You can simply “install” from the address bar, and it will be treated as if it’s a native app in Windows or macOS. If you’re using a Chromium browser like Chrome or Brave, then the support is live right now. Microsoft has been slowly adopting PWAs for Windows apps since last year, and Outlook is a sign that we may see similar apps for the company’s other Office products like Word and Excel. PWAs, by their nature, are essentially still websites, but they include better caching, notification features, and background functionality to make them appear more like traditional apps. Option: Enable Ask me which app to use every time to get a sheet with options every time you tap an email address. Example: Pick Gmail to open the Gmail app by default for email in Chrome. Select the preferred email program under MAIL. It’s a useful alternative to the cluttered Outlook Windows desktop app or the Windows Mail client that ships as part of Windows 10. Pick Default apps from the Content Settings menu. This allows any Outlook user to install the web app into Windows, macOS, Chrome OS, and other platforms that natively support PWAs. Microsoft is turning its and Outlook for the Web mail services into Progressive Web Apps (PWA).