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.
Replies
Is there an iOS app? Or is it just desktop for now?
Upstream
@clairelabarre Yep we have an iOS app, check it out and let us know what you think 🙂
Roame
it’s good to see a dual use inbox!
Upstream
@tim_qin the more uses the merrier! Feel free to shoot us over any ideas :)
Early adopter of Upstream and I am a huge fan!
I have tried them all: Gmail AI features, Codex & Claude Code with MCPs, Superhuman. But the only one that really stuck has been Upstream.
My favorite feature is the emails auto draft using my voice! I find myself just pressing send 70% of the time.
Upstream
@guillaume_miara Thanks for supporting us from the beginning Guillaume!
So cool ! if I sign up for this, is my data private? Do you use it to train AI models?
Upstream
@jean_philippe Thanks for giving us a try!
Your data is completely private and is only used to power your Upstream experience, like drafting in your voice, classifying your inbox, and answering your questions in chat. It is never used to train shared AI models.
Great time-saver. Particularly value the 'Follow Ups' feature which surfaces emails requiring a follow-up, including the actual wording so you can just press send. These get totally lost in gmail.
Upstream
@jacob_waern This is one of those features that I use almost every day. I'm glad it's been saving you some time!
You save me at least 1h a day. Thanks a lot Upstream team !
Upstream
@romain_levrini Nothing better than getting time back! 🕰️ Let us know if we can build anything else that would help save more time
Quartz
Seems like a week of email clients :). Congrats with the launch and good luck today.
Upstream
@dzhlobo A week indeed. Congrats on your launch yesterday! Thanks so much :)
love it! will easily replace my Superhuman subscription
Upstream
@amaury_sepulchre2 Love to hear that 💪
One of the first time I am actually able to switch immediately without going back and forth to Gmail to complete a task. Very very neat !
Upstream
@julienalart Less context switching and more focus! Thanks for your support 😊
The interesting problem with a shared human/agent inbox isn't the UI, it's attribution and handoff. When an agent drafts or sends something on my behalf, I need to know exactly what it touched, what it decided autonomously versus what it queued for my review, and what happens when I disagree with a choice it already made. Does Upstream have a clear model for that, or is the agent more of a drafting assistant that still requires explicit approval before anything goes out? Also curious whether this is built on top of existing mail providers like Gmail and Outlook, or whether you're asking people to route actual email through a new address.
Upstream
@fberrez1
We totally agree that control and final decision should remain in your hands. The agents work for you and nothing gets sent without your approval. Upstream works with your existing gmail address and keeps everything in sync with your Gmail account.
TBH I find the attribution/handoff problem fascinating, especially as agents are going to gain in capability. Do you have a take on what the right approach should be here?