Upstream
The company has rebuilt email infrastructure from the ground up to support AI agents that can read, write, organise, and act on behalf of users, rather than layering assistants onto traditional email clients originally designed only for human interaction.
Upstream has raised €2.6M across 1 funding round from 4 investors, most recently a Pre-Seed round in Jun 2026. Based in Paris, France; active in AI. Data as of 28 Oct 2026.
Paris, Francewww.upstream.do ↗
Total raised
€2.6M
€2,583,089
Funding rounds
1
Investors
4
distinct backers
Active since
2026-06
latest 2026-06
Funding by year
EUR raised per year · 2026 YTDUpstream — funding by year — interactive chart.
Data table
| Upstream — funding by year | |
|---|---|
| 2026 | €2.6M |
Signals
High confidenceRaise-next likelihood19
base rate 24% for Pre-Seed
- ▼ Raised very recently
- ▼ Low backer re-investment
Timing: too soon vs cohort gap · momentum unknown. Funding-only estimates, not predictions and not investment advice — see signals.
Funding rounds
1 round| Date | Stage | Amount | Investors | |
|---|---|---|---|---|
| 2026-06-03 | Pre-Seed | €2.6M | Angel Investors,Connect Ventures,Roosh Ventures,Y Combinator | View deal → |
Investors
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