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The first inbox designed for humans and agents
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.
Upstream is a messaging app for teams built on top of email. It aims to reduce inbox chaos by organizing messages into splits, drafting replies in the user’s voice, and enabling automation for replies and follow-ups.
Upstream divides an inbox into workflow-friendly splits, pre-sorts messages that need a reply, and uses AI to draft replies in the user’s voice. It provides features such as snoozing, starring, labeling, scheduling, and follow-ups; it also offers AI-generated drafts and prompts that reflect the user’s writing patterns to compose replies tailored to each conversation. The product emphasizes reducing noise and allowing users to focus on what matters, with integrations like GitHub mentioned in context.
Who it’s for: Teams and professionals who manage email-based workflows and want to reduce inbox noise while drafting replies in their own voice
Backed by Combinator; mentions of YC Credits; marketed to thousands of professionals and teams; multiple product iterations and public pricing references
I'm the founder & CEO @ Upstream. I was one of the early product people @ Asana, driving growth and adoption up to $100M ARR. I went on to lead the entire product team @ Algolia (YC W14) as their Head of Product through series B and C, assembling a team of 20+ talented product builders, while growing ARR 2.5x to $100M+. Also worked @ AgilOne (acquired) and graduated from @ Stanford and @ Ecole des Ponts
I am the co-founder & CTO @ Upstream. My love for software started when I was only a teenager: I developed @ Dino Gaia, one of the most popular online French consumer games in the 2000s, registering a million visits every month. I've since built extensive technical hands-on and leadership experience across multiple sectors, including ride-hailing, fintech, and legaltech. I was most recently the VP of Engineering @ Doctrine before it got acquired.
Delivering efficiency for teams, while letting individuals regain focus.
Upstream launches a modern email client designed for team collaboration, enabling async conversations that are traceable, context-rich, and visible to the whole company. It targets teams seeking to manage emails with assigned actions, due dates, and summaries while reducing unnecessary notifications, using email as the base workspace.
From the original launch (Jul 2023) — may be outdated.
Formerly “Snik” · why startups rename →
Intelligent meeting automation for ambitious teams.
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