Finally, an inbox you'll look forward to. Agents sort your messages, draft your replies, and clear the grunt work behind the scenes, all in a client so well-crafted that email feels light, fast, fun.
Hey Product Hunt! 👋 Louis here, co-founder of Upstream.
When I was at Algolia, I was drowning in 200 emails a day. I was never sure where to focus, and getting through my inbox took forever. I knew it didn’t have to be this way. Instead of creating a new messaging protocol, I bet on rethinking the tool everyone uses: email.
We built the first email client where agents do real work alongside people. We designed Upstream to be easy to pick up and fun to use.
📥 Take the noise out of email Agents automatically triage your inbox, separate signal from noise, and surface only what deserves your attention
✍️ Every reply starts with a draft Upstream drafts replies for every conversation that needs one. It also changes your voice based on who you’re talking to and the context of the convo
⏰ Never miss a follow-up Agents track open loops and remind you when needed, making sure important conversations don't fall through the cracks
🔎 Ask anything about your work AI can instantly find information across your inbox and connected tools: receipts, meeting notes, introductions, decisions, conversations, and more
🔗 Bring all your context into your inbox Agents use information from tools like Notion, Calendar, Drive, Granola, and other sources to produce better answers and drafts
👉 As a special thank you to the Product Hunt community, you get one free month of Upstream Pro if you sign up at upstream.do and use the code PH26! 👈
We are all so excited to hear what you think! Please do reply here and let me know
Huge thanks to our hunter @garrytan for hunting us 🙏
About Upstream on Product Hunt
“The inbox designed for humans and agents”
Upstream launched on Product Hunt on June 18th, 2026 and earned 450 upvotes and 199 comments, earning #1 Product of the Day. Finally, an inbox you'll look forward to. Agents sort your messages, draft your replies, and clear the grunt work behind the scenes, all in a client so well-crafted that email feels light, fast, fun.
On the analytics side, Upstream competes within Email, Productivity and Artificial Intelligence — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how Upstream performed against the three products that launched closest to it on the same day.
Who hunted Upstream?
Upstream was hunted by Garry Tan. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Garry Tan
Hey Product Hunt! 👋 Louis here, co-founder of Upstream.
When I was at Algolia, I was drowning in 200 emails a day. I was never sure where to focus, and getting through my inbox took forever. I knew it didn’t have to be this way. Instead of creating a new messaging protocol, I bet on rethinking the tool everyone uses: email.
We built the first email client where agents do real work alongside people. We designed Upstream to be easy to pick up and fun to use.
📥 Take the noise out of email
Agents automatically triage your inbox, separate signal from noise, and surface only what deserves your attention
✍️ Every reply starts with a draft
Upstream drafts replies for every conversation that needs one. It also changes your voice based on who you’re talking to and the context of the convo
⏰ Never miss a follow-up
Agents track open loops and remind you when needed, making sure important conversations don't fall through the cracks
🔎 Ask anything about your work
AI can instantly find information across your inbox and connected tools: receipts, meeting notes, introductions, decisions, conversations, and more
🔗 Bring all your context into your inbox
Agents use information from tools like Notion, Calendar, Drive, Granola, and other sources to produce better answers and drafts
👉 As a special thank you to the Product Hunt community, you get one free month of Upstream Pro if you sign up at upstream.do and use the code PH26! 👈
We are all so excited to hear what you think! Please do reply here and let me know
Huge thanks to our hunter @garrytan for hunting us 🙏