Upstream
Messaging Apps
Funding and backers
Backers
2
Y Combinator, Connect Ventures
Momentum
0/100
no fresh signals
The story so fareach stage dated by its source: the company's releases, the press, registers, filings
Oct 1
Launched on Hacker News Show HN: Inbox Cleanup – get to inbox zero in Gmail
Nov 13, 2025
Released an app Upstream - Email · App Store
Jun 2023
Went through Y Combinator
Tractionpublic signals, read monthly
Web presence
top 2%
of 133.2M domains by links, Common Crawl
App Store
3.7 ★
3 ratings
Backed byfrom the funds' portfolios and accelerator catalogs
Investors in similar startupsfunds that back the companies most like this one
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Connections
List
Graph
Found in company registers, site code, DNS and hiring. Each connection shows how sure we are and the evidence, with its source and date.
Shared investors
Connect VenturesVia a fund
Y CombinatorVia a fund
6310 portfolio companies
Click a company to open it. Dashed lines are likely connections. The second step of the network is part of the Pro plan.
Owner
Same company
Same group
Likely
Offices
Where the company hires and what each office is for
Cities
1
Hiring now
0
Countries
1
Paris
France
HQ