Yes, you can use the Outlook email app for free and even create a free Outlook email address (e.g., yourname@outlook.com). However, this doesn’t allow you to use a branded domain for business email, so it’s not best for business use. There are ways to get a free email domain—for example, the purchase of a domain with IONOS comes with a free email account. You can connect to Outlook, but you’ll still need a Microsoft 365 plan to do so.