No account? Create one! Can’t access your account? Terms of use Privacy & cookies. What’s the difference between Exchange and Outlook? Exchange is the server on the backend that stores and syncs your data across your devices. Outlook is the client on the frontend that lets you read, write, and organize emails. Sign in to Outlook with Microsoft 365 to access your email, calendar, and more. Download the app or log in online for enhanced organization and productivity. Sign-in options Terms of use Privacy & cookies. Sign in to manage your Microsoft account and access free online services like Outlook, Word, Excel, and PowerPoint securely from any device. Sign In with your Microsoft account. One account. One place to manage it all. Welcome to your account dashboard. No account? Create one! Can’t access your account? Terms of use Privacy & cookies. Sign in to your Outlook account to access and manage your emails securely. With your Outlook login and Outlook on the web (OWA), you can send email, check your calendar and more from – all your go-to devices. Outlook. JavaScript must be enabled. ttt.