Email inbox designed for both humans and AI agents, founded by ex-Algolia and Doctrine executives.
| Date | Round | Amount |
|---|---|---|
| Jun 2026 | Pre Seed YC-backed Upstream raised a $3M pre-seed from Y Combinator, Connect Ventures and 30+ operators to launch an inbox built for humans and AI agents. | $3M |
| Dec 2022 | Debt London-based mobile marketing company Upstream secured a EUR14M five-year loan from the National Bank of Greece, partly to refinance an earlier EIB loan. | $15M |
Tap an investor to see what else they have backed.
Data is community-curated and may be incomplete.