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Upstream Raises $3.0M Pre

Recently funded · $3.0M Pre-seedRetailUSView source

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The drive toward a more robust and enduring reuse economy just received a significant push, as Upstream announced it has secured $3.0M in pre-seed funding. The capital will fuel the company's efforts to normalize reuse practices, grow and support the burgeoning reuse industry, and ensure a supportive policy environment for its expansion.

The round saw participation from institutional investors Y Combinator and Connect Ventures. They were joined by a notable group of individual backers, including Koen Bok, Jorn van Dijk, Nicolas Dessaigne, Julien Lemoine, Linda Tong, Jean-Charles Samuelian-Werve, Dave King, and Roxanne VARZA.

From the source

Daan · Jun 3, 2026

Paris-based Upstream raises $3 million pre-seed to build an email client for team collaboration and inbox management Paris-based startup @Upstream has announced a $3 million pre-seed round backed by Y Combinator, Connect Ventures, and a group of angel investors including Koen Bok, Jorn van Dijk, Nicolas Dessaigne, Julien Lemoine, Linda Tong, Jean-Charles Samuelian-Werve, Dave King, and Roxanne VARZA.

Founded in 2023, Upstream is building a modern email client designed for team collaboration. The company says its product helps teams manage conversations with more context and visibility, while AI agents sort incoming noise, draft replies in the user’s voice, follow up at the right time, and handle tasks such as finding receipts or scheduling meetings. The funding comes as startups continue to e

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