Outlook

Outlook is an email service that uses machine learning to rank incoming emails and display important ones in the Focused tab, while hiding less essential ones in the Other tab. Users can easily organize appointments, meetings, and events using the Calendar feature and store contacts in People. Outlook is also highly accessible, with support for assistive devices and voice navigation. Quick Parts allows users to save and paste blocks of text at their convenience.

One drawback of Outlook is that its user interface can be slightly cramped. However, its web app is a strong competitor to Gmail, offering a generous free 15GB Inbox, an extra 5GB OneDrive cloud storage, and access to the web and mobile versions of Word, Excel, and PowerPoint.

While the Outlook web interface may appear cluttered compared to Gmail, it's familiar and similar to desktop. The organizational tools on the left, current folder contents in the center, and a simple preview pane on the right (with adverts for free accounts) make it easy to navigate. Under the hood, Outlook automatically detects important emails and adds them to the Focused Inbox, adds events to the calendar, and offers the ability to share calendars or add polls directly to emails.

Outlook also has excellent attachment support and allows users to attach files from OneDrive, Google Drive, Dropbox, and Box accounts. The ample 15GB mailbox capacity enables users to store plenty of files from others.

Developer/Owner: Microsoft Corporation
Launch date: October 5, 2021
Website: outlook.com

Users: ~400 million users as of 2023