Upstream is where modern teams collaborate.
Location: France
Employees: 1-10
Total raised: $3M
Investors 1
| Date | Name | Website |
| 22.10.2023 | Y Combinat... | ycombinato... |
Funding Rounds 1
| Date | Series | Amount | Investors |
| 03.06.2026 | Pre-Seed | $3M | Roosh Vent... |
Mentions in press and media 2
| Date | Title | Description |
| 03.06.2026 | Upstream raises $3M to launch collaborative AI inbox backed by YC and Xavier Niel | Paris-based startup Upstream today announced the general availability launch of its AI-native inbox platform, alongside a $3 million pre-seed funding round backed by Y Combinator, Connect Ventures, Roosh Ventures, and more than 30 founders ... |
| - | Upstream | “Upstream is a messaging app for teams, built on top of email.” |