Superhuman is a lightning-fast email client from San Francisco, founded in 2015 by Rahul Vohra, built around millisecond search and full keyboard operation. Superhuman AI adds writing and summarization, with subscriptions around $30/month and a 30-day free trial.
Microsoft 365 is Microsoft's cloud productivity suite covering Word, Excel, PowerPoint, Outlook, Teams, and OneDrive, with 400M+ commercial paid seats and 300M+ Teams monthly active users, one of the most comprehensive office solutions.
Outlook.com (formerly Hotmail) is Microsoft's free personal email service, founded in 1996 with 400M+ active users. Deeply integrated with the Microsoft 365 ecosystem for email, calendar, contacts, and cloud storage.