The Microsoft Outlook logo, for Microsoft’s email and calendar service, looks like a folded envelope in a simple shape with rounded corners and an open top. The mark is built from several color segments arranged diagonally, in a blue-to-light-blue palette with soft gradient fills, which makes the envelope look layered. On the left, over the envelope, there is a dark-blue rounded square containing a white “O”. This icon variant relates to the Microsoft 365 icon system refresh in fall 2025.
Microsoft Outlook is a Microsoft app for email management and scheduling that combines mail, calendar, contacts, and tasks in one interface. Outlook is widely used in corporate environments with Microsoft Exchange and Microsoft 365 services, supports multiple mailboxes and calendars, meeting invitations, and shared access. The product appeared as an email client within the Microsoft Office 97 suite in 1997 and over time became one of Microsoft’s key tools for business communication and time organization, available on Windows, macOS, the web, and mobile apps.











