Reviewers largely describe Missive as a strong shared email hub: reliable across devices, easy for teams to collaborate in, and helpful for bringing more structure and accountability to inbox work. Several say it became central to their email management after trying other tools, citing smooth IMAP sync, customizable rules, and clear escalation paths. The main complaints are narrow but concrete: one user reports broken keyword search after an update, and another mentions a stubborn unread-notification badge. Overall, sentiment is very positive, with a few workflow bugs standing out.