Upstream - The inbox designed for humans and agents
byā¢
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
I love the categorization, so much better than native Gmail and Superhuman. Congrats to the team!
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@flrntdgĀ Thanks so much! Are there any other types of messages that you would like auto categorized?
Ohhh nice! Finally something that will make me enjoy writing emails š
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@fluxwerkĀ A little bit of joy goes a long way!
I got hooked! My productivity went up massively, my mail box is always empty, auto-draft feature is the best out there - it matches my tone very well - and the keyboard commands make it feel so good. Big congrats guys!
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@arthur_taubnerĀ Wow! Love hearing how much Upstream has been helping your workflow. Thanks for the support :) Are there any other features that would make your life easier?
Really loving the product so far! I barely need to adjust the drafts Upstream generates.
The only thing Iād love to see improved is smoother switching between mailboxes without opening a new tab each time.
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@vivien_pĀ I'm happy to hear that you're enjoying Upstream! Would a shortcut to switch mailboxes be helpful or do you have another idea of what would work best for you?
@louislecatĀ just when I switch from the top right button to another mailbox that is already open in another window, it opens this window instead of a new one. I often get 6+ windows open.
A keyboard shortcut could be cool too.
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@vivien_pĀ Got it, so switching mailboxes, but staying in the same tab would be the optimal experience?
Been using Upstream in beta and the drafts genuinely sound like me, not like AI assisted. The replyās already waiting when I open a thread. Congrats!
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@gregoireboutinĀ We love nailing your voice, thanks for being an early supporter!
Twenty
Congrats Louis, Jonathan, and team! Can you plug your codebase/github repo as context?
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@thomas_dfĀ Not yet natively. The current workaround is to open your codebase in Claude Code, Codex, or Cursor, let it gather the relevant repo context, and then have it use Upstream via MCP to draft the reply.
Whatās the use case you have in mind?
Twenty
@louislecat today I have a Codex automation that drafts me Gmail answers for Sales & Support messages using the codebase as context, this is really useful!
Twenty
Love the fact that you can bring in your custom agent. How does that work?
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@_felxĀ Thanks! ā Your agents can have their own accounts in Upstream and participate directly in the workspace. They can read threads youāve given them access to (for example through channels or by tagging them on a conversation), take actions, and leave private comments so you can see what theyāre doing and interact with them directly.
They connect through MCP (Settings ā MCP), which lets them use Upstream while keeping access to all the context and tools they already have (eg your docs, CRM, codebase, support system, etc.)
What kind of agent are you thinking of connecting, and what use case do you have in mind?
Sales Compensation Hub
congrats team!
I've a quick question. How can I edit the soul or voice of the agent when writing email draft? Can I create multiple profiles, eg. when writing to a team member, a lawyer, a customer, or a VC?
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@jelorillonĀ Thanks Jean! You can edit the prompt for your voice by going to Settings > Configure Agents. You'll be able to tweak your global writing style prompt as well as the prompts for each audience. You can also create a custom audience and define your voice for it.
Just curious what are your most common audiences?
Iāve been using Upstream for a few weeks, and it genuinely gave me time back, which not many tools actually deliver on.
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@gabriel_hofmanĀ That's amazing to hear! Are there any features that could save you even more time?
Makes me love email again š
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@cedric_rouxĀ Making this emoji a reality ā š