Reviewers mostly say Superhuman makes email much faster and less stressful, especially through keyboard shortcuts, snippets, split inboxes, reminders, and AI tools that summarize threads and draft replies in a natural voice. Many say it helps them reach inbox zero, manage multiple accounts, and collaborate better with team comments and shared context. The main complaints are cost, a pricing change some saw as unfriendly, missing options like unified inbox or some Outlook add-ins, and one mobile issue where comments can be mistaken for emails.