Upstream - The inbox designed for humans and agents
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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.
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Curious how Upstream handles the trust gap though when an agent drafts a reply on your behalf, how much do you let it send autonomously vs. always queue for human approval? That's usually where these tools either win or lose people fast.
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Thanks for the question @alexander_gray3! That's actually one of our strongest product principles: nothing ever sends automatically.
Agents can draft replies, prepare follow-ups, suggest actions, and do a lot of the grunt work, but a human always has to hit the Send button. We think organizing and preparing work can be highly autonomous. Sending an email is a different trust boundary altogether.
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Our opinionated stance for now is that every message needs to be reviewed by you before it's sent - curious what you would expect?
This resonates the 200 emails a day problem is brutal and most AI inbox tools just slap a summarizer on top without rethinking the actual workflow. The framing of agents working alongside people rather than just filtering is the more interesting bet IMO.
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@ana_popescu2 Completely agree with you. Let's hope this is actually the right bet. Thank you so much for leaving a comment!
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@ana_popescu2 Well said. We've always felt that email is more of a workflow problem than a summarization problem. Curious: what’s the best AI inbox product (or other AI tools and tips to manage your inbox) you’ve tried so far, and where did it fall short for you?
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@ana_popescu2 curious what kind of agent would help you most in your emails?
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@ana_popescu2 Thanks for the support, Ana! 🙏
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Hey PH — Patryk here, one of the builders behind Upstream.
The part I’m most proud of is that Upstream is not just another AI summary layer on top of email. The goal is to help people actually get through conversations: triage, draft replies, adapt tone, and never lose important follow-ups.
We’ve been using it internally while building it, and it already changes how email feels day to day.
Happy to answer questions about the product, agents, privacy, or how it compares to other email clients.
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@patryk_jeziorowski So happy to have you on board Patryk!
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@patryk_jeziorowski @skwph Congrats for making it to #1 Product of the day 🙌🙌🙌🙌
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For those wondering, @patryk_jeziorowski is one of the people responsible for a lot of the magic happening behind the scenes 🫡
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What a week ❤️
We honestly didn’t know what to expect going into this launch.
Seeing so many people sign up, try the product, challenge our assumptions, share feature ideas, and tell us how they use Upstream has been incredible. Your feedback has been extremely valuable!
Huge thank you to everyone who gave Upstream a chance. We're reading every comment, every email, every bug report, and we’re already working on making the product better because of them 🐟
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This.
Couldn't have asked for a better week. Watching people sign up, dig in, push back on our assumptions, and share how they actually use Upstream has been everything we hoped for and more.
To everyone who gave us a shot: thank you. We're reading every comment, every email, every bug report, and you'll see the product get better fast because of it 🐟
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@jontiret I couldn't have said it better Jon! Such a huge wave of emotion from all the support and feedback from the community!
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@jontiret Can't agree more, it's been WILD!
I'm so happy to see all the positive reactions around the product and all the feedback we got!
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@jontiret @skwph Me too! It's been the best feelign :)
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We finished #1 product of the day!!! Thank you so much everyone for the support, it's been incredible! I feel so grateful to be part of such a strong and lovely community, and we can't wait to ship more stuff to make you love your emails again 🫶 ❤️
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@louislecat It feels amazing to have so much support from the Product Hunt community. We've got so much more in store for y'all!
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@louislecat Still feels a bit surreal honestly 😅 Thanks everyone for giving Upstream a chance.
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@louislecat @jontiret We're cooking up some fun stuff next!
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@louislecat Being product of the day inspired me so much, it makes me wanna be build much more 🔥
The hardest part of AI email assistants seems less about drafting and more about trust. At what point do users become comfortable sending agent-generated replies with minimal edits, and where do they still prefer to stay fully in control?
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@yagnaveena the user maintains control in both scenarios. You can edit agent generated drafts or completely write them from scratch.
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@marie_lecat thank you!
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@marie_lecat Thank you Marie!
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@marie_lecat thanks!
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Congrats on the launch guys! Great to finally have a take on email for humans and agents, definitely sounds like the future
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@robi Thanks for the support! Glad to being making email more fun and flexible 😄
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@robi thanks a ton Robi
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@robi Thanks Sébastien!
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@robi Thanks a lot! We think this is the right next chapter for email too
Is there an iOS app? Or is it just desktop for now?
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@clairelabarre Yep we have an iOS app, check it out and let us know what you think 🙂
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@clairelabarre @amperisk The app is gorgeous! you worked so hard to make it happen! 🔥
@amperisk @skwph Well done!
@amperisk Love it!
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Curious to get your feedback on the iOS app @clairelabarre :)
@jontiret Love it! let's grab coffee or have a quick call!
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@clairelabarre thank you!!
This looks really promising! Does it work across multiple Gmail accounts?
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@kimberlee_calvo Yes, you can connect as many Gmail accounts as you like!
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@kimberlee_calvo did you want to connect pro & perso or did you have another use case in mind?
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@kimberlee_calvo excited for you to give it a try!
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@kimberlee_calvo Thank you Kimberlee!
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@kimberlee_calvo please drop some feedback once you try it :)