Shortwave builds standalone email business
Jacob Wenger, CPO at Shortwave, on building a standalone business on email
The key lesson is that great inbox software only becomes durable when it is tied to work people already pay to do. Mailbox and Sunrise won love by making old workflows feel modern, but they stayed lightweight consumer utilities and were absorbed into larger suites. Shortwave is designed differently. It plugs into Gmail, targets knowledge workers inside teams, and sells better organization, faster back and forth, and collaboration on top of an existing email system.
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Shortwave starts with an individual inbox, then layers in team behavior. A user connects a Gmail or Google Workspace account, gets bundles, pin, snooze, done, and chat-like threading first, then adds shared channels and team workflows. That creates a clearer paid seat than a pure consumer email app had.
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The failed predecessor pattern was strong product, weak monetization. Mailbox was acquired by Dropbox in 2013 and shut down in February 2016. Sunrise was acquired by Microsoft in 2015 and its shutdown was folded into Outlook in 2016. Both proved UX demand, but not a standalone business model.
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The modern comparable is Superhuman, which turned email UX into paid software for professionals and reached an estimated $35M revenue by June 30, 2025. Shortwave is chasing the same willingness to pay, but with a broader team oriented product and lower price points, rather than only serving elite inbox power users.
This market is moving from clever email wrappers to full communication workspaces. The winners will be the products that become part of a company’s daily operating flow, where email, lightweight chat, AI drafting, and team coordination happen in one place, and where replacing the tool would feel like slowing the team down.