Upstream

The first inbox designed for humans and agents

by Louis Lecat, Jonathan Tiret, Benjamin Bourgeais, Konstantin L, Patryk Jeziorowski, Joseph Calvo·Productivity·YC Summer 2023·tracked since Sep 25, 2026

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Monthly revenue–Not shared yet

Rank–Unranked

Last 30 days–Growth in MRR

Revenue per founder–6 founders

About Upstream

Your inbox, handled for you. Upstream's agents sort the noise, draft replies in your exact voice, follow up at the right time, and do what you ask - like finding receipts or scheduling meetings - so you can fly through your inbox and have fun doing it.

Launch traction

Product Hunt upvotes

970

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Questions

Who founded Upstream?

Upstream was founded by Louis Lecat, Jonathan Tiret, Benjamin Bourgeais, Konstantin L, Patryk Jeziorowski, Joseph Calvo.