What it sells
The inbox that handles itself
Business model breakdown
Buyer: who owns the budget?
UnverifiedIndividuals and team leads paying per seat.
Trigger: what makes them buy now?
UnverifiedOverloaded inbox and slow replies.
Workflow: what inputs become what output?
Upstream sits on Gmail, organizes inbox, drafts replies in user voice, follow-ups, shared channels; user reviews and sends.
Economics: what it saves and how it charges
Per-seat subscription with free tier.
Distribution: how it reaches customers
Self-serve signup, App Store app, Product Hunt.
Funding history and coverage
| Round date | Stage | Amount | Investors | Source |
|---|---|---|---|---|
| — | Y Combinator Summer 2023 | — | Y Combinator | ycombinator.com |
Profiles summarize public reporting and company websites. Business-model notes are MaxBC's reading of that material, not confirmed facts; unknowns are left blank rather than guessed. Updated 2026-10-12.