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GA
GA
me, Jonathan
Does the Snooze mention go away after some time?
Joseph and I just chatted and decided we should go with the first one...
GA
GA
GA
Me, Patryk, Louis
Coffee Machines
Joseph and I just chatted and decided we should go with the first one...
1 hour ago
GA
GA
Romaine, Re...Jon
Upstream + Anthropic - YC Credits
Hi Jon, Thanks for reaching out to…
1 hour ago
GA
GA
Arthur, Louis
Feedback Beta tester
Hello Louis, avec plaisir. Je suis dispo vendredi à 18h CET. Let me know, Arthur
4:50 PM
GA
me, Joseph, Patryk
channels rules launch?
Nice! I agree. I’m merging another small update this morning (delete…
1 hour ago
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Important
5
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1
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Other
GA
GA
me, Jonathan
Does the Snooze mention go away after some time?
Joseph and I just chatted and decided we should go with the first one...
GA
GA
GA
Me, Patryk, Louis
Coffee Machines
Joseph and I just chatted and decided we should go with the first one...
1 hour ago
GA
GA
Romaine, Re...Jon
Upstream + Anthropic - YC Credits
Hi Jon, Thanks for reaching out to…
1 hour ago
GA
GA
Arthur, Louis
Feedback Beta tester
Hello Louis, avec plaisir. Je suis dispo vendredi à 18h CET. Let me know, Arthur
4:50 PM
GA
me, Joseph, Patryk
channels rules launch?
Nice! I agree. I’m merging another small update this morning (delete…
1 hour ago
Backed by
Combinator
Less inbox chaos.
More energy for what matters.
Upstream organizes your inbox, cuts the noise, drafts replies and follow-ups in your voice so you feel lighter and focused
use for free forever
Inbox
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Important
5
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1
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Newsletters
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Other
GA
GA
me, Jonathan
Does the Snooze mention go away after some time?
Joseph and I just chatted and decided we should go with the first one...
GA
GA
GA
Me, Patryk, Louis
Coffee Machines
Joseph and I just chatted and decided we should go with the first one...
1 hour ago
GA
GA
Romaine, Re...Jon
Upstream + Anthropic - YC Credits
Hi Jon, Thanks for reaching out to…
1 hour ago
GA
GA
Arthur, Louis
Feedback Beta tester
Hello Louis, avec plaisir. Je suis dispo vendredi à 18h CET. Let me know, Arthur
4:50 PM
GA
me, Joseph, Patryk
channels rules launch?
Nice! I agree. I’m merging another small update this morning (delete…
1 hour ago
Backed by
Combinator
The first inbox designed for humans and agents
Upstream organizes your inbox, cuts the noise, drafts replies and follow-ups in your voice so you feel lighter and focused
use for free forever
Used by thousands of professionals and teams at:
- Messages that need a reply are pre-sorted when you open your inbox
- Your inbox is organized into Splits that fit your workflow
- AI moves cold emails and newsletters out of the way
- Messages that need a reply are pre-sorted when you open your inbox
- Your inbox is organized into Splits that fit your workflow
- AI moves cold emails and newsletters out of the way
- Upstream identifies your writing patterns and saves them as a personalized prompt
- Agentic AI drafts replies, taking into account recipients, thread context, and past messages with recipients
- AI drafts are already there when you open a message, just tweak and hit send
- Upstream identifies your writing patterns and saves them as a personalized prompt
- Agentic AI drafts replies, taking into account recipients, thread context, and past messages with recipients
- AI drafts are already there when you open a message, just tweak and hit send
- Upstream assesses the context of each message to determine the exact time a follow up should return to your inbox
- Upstream assesses the context of each message to determine the exact time a follow up should return to your inbox
- AI generates a draft taking into account any other threads with the recipients
- AI generates a draft taking into account any other threads with the recipients
the inbox that
the inbox that
handles itself
handles itself
Focus
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on what matters most
matters most
Upstream splits your inbox into what needs attention, what can wait, and what you can ignore so important emails never get buried
Primary
5
Needs Reply
VIP
Linear
Noise
GA
GA
me, Jonathan
Quick decisions to unblock today
A few threads need your eyes this morning — nothing huge, but worth clearing before the day gets away from you.
GA
Janice, Arthur
Can you take a look?
This is mostly ready — just need your take before we finalize it.
5 mins ago
GA
GA
Paul, Charlize
Investor Follow-up
For next week’s review, could you: Add a brief summary slide with your recommendation, and
1 hour ago
GA
Duane
Linear x GitHub integration
Jon mentioned you on a task
4 hours ago
GA
GA
GA
Patryk
An idea for your team
Saw what you’re building and thought this might be relevant if this is a priority right now.
12:38 PM
GA
Noëline
Initial contact x Noëline
In case it's useful to see some ROI from our existing customers:
6:50 AM
Focus
on what
matters most
Upstream splits your inbox into what needs attention, what can wait, and what you can ignore so important emails never get buried
Primary
5
Needs Reply
VIP
Linear
Noise
GA
GA
me, Jonathan
Quick decisions to unblock today
A few threads need your eyes this morning — nothing huge, but worth clearing before the day gets away from you.
GA
Janice, Arthur
Can you take a look?
This is mostly ready — just need your take before we finalize it.
5 mins ago
GA
GA
Paul, Charlize
Investor Follow-up
For next week’s review, could you: Add a brief summary slide with your recommendation, and
1 hour ago
GA
Duane
Linear x GitHub integration
Jon mentioned you on a task
4 hours ago
GA
GA
GA
Patryk
An idea for your team
Saw what you’re building and thought this might be relevant if this is a priority right now.
12:38 PM
GA
Noëline
Initial contact x Noëline
In case it's useful to see some ROI from our existing customers:
6:50 AM
Drafts
that
that sound like you
sound like you, just hit send
you, just hit send
Upstream drafts replies in your voice, tailored to each specific conversation
Deck for Monday
GA
GA
GA
Hugo Pani
·
Yesterday at 2:09 PM
did you get a chance to look at the updated deck yet? lmk what you think
GA
Louis Lecat
·
Today at 1:16 PM
Yeah, I went through it this morning. It looks good overall, what do you think about making slide 6 a little clearer?
AI Draft
that sgtm, I’ll clean that one up today and send the revised version once it’s updated AI
Drafts
that sound like
sound like you, just hit send
you, just hit send
Upstream drafts replies in your voice, tailored to each specific conversation
Deck for Monday
GA
GA
GA
Hugo Pani
·
Yesterday at 2:09 PM
did you get a chance to look at the updated deck yet? lmk what you think
GA
Louis Lecat
·
Today at 1:16 PM
Yeah, I went through it this morning. It looks good overall, what do you think about making slide 6 a little clearer?
AI Draft
that sgtm, I’ll clean that one up today and send the revised version once it’s updated AI
Follow up
Follow up
at
at the right time
at the right time
the right time
Upstream brings important conversations back at the right time with an AI draft, so nothing slips through the cracks
Upstream brings important conversations back at the right time with an AI draft, so nothing slips through the cracks
Follow ups
GA
me, Lisa
Recap from earlier
Sharing a quick summary in case helpful as you look this over.
GA
GA
me, Jonathan
Checking in on this issue
Wanted to see whether you’d had any movement on this since my last note.
12 mins ago
GA
GA
Romaine, Jon
Great meeting you at the Tech Summit
It was great meeting you there, so I wanted to reach back out here.
2 hous ago
GA
Joseph, Patryk
Sharing the file here
Sending this over again here in case it is easier to reference.
4:50 PM
GA
GA
GA
me, Patryk, Louis
Had a chance to review?
Curious whether you’ve had a moment to take a look yet.
2:37 PM
GA
GA
Arthur, Louis
Glad we had a chance to connect
Reaching out again since I enjoyed our conversation and wanted to stay in touch.
1:19 PM
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me, Jonathan
Does the Snooze mention go away after some time?
Joseph and I just chatted and decided we should go with the first one...
GA
GA
GA
Me, Patryk, Louis
Draft
Coffee Machines
Joseph and I just chatted and decided we should go with the first one...
1 hour ago
GA
GA
Romaine, Re...Jon
Follow Up
Upstream + Anthropic - YC Credits
Hi Jon, Thanks for reaching out to…
3 hours ago
GA
GA
Arthur, Louis
Feedback Beta tester
Hello Louis, avec plaisir. Je suis dispo vendredi à 18h CET. Let me know, Arthur
4:50 PM
GA
me, Joseph, Patryk
Draft
Channels rules launch
Nice! I agree. I’m merging another small update this morning (delete…
11:53 AM
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GA
GA
me, Jonathan
Does the Snooze mention go away after some time?
Joseph and I just chatted and decided we should go with the first one...
GA
GA
GA
Me, Patryk, Louis
Draft
Coffee Machines
Joseph and I just chatted and decided we should go with the first one...
1 hour ago
GA
GA
Romaine, Re...Jon
Follow Up
Upstream + Anthropic - YC Credits
Hi Jon, Thanks for reaching out to…
3 hours ago
GA
GA
Arthur, Louis
Feedback Beta tester
Hello Louis, avec plaisir. Je suis dispo vendredi à 18h CET. Let me know, Arthur
4:50 PM
GA
me, Joseph, Patryk
Draft
Channels rules launch
Nice! I agree. I’m merging another small update this morning (delete…
11:53 AM
© 2026 Upstream Labs, Inc. All Rights Reserved.
Regain focus
Let Upstream handle your inbox so you can focus on what matters most
Inbox
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5
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1
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GA
GA
me, Jonathan
Does the Snooze mention go away after some time?
Joseph and I just chatted and decided we should go with the first one...
GA
GA
GA
Me, Patryk, Louis
Draft
Coffee Machines
Joseph and I just chatted and decided we should go with the first one...
1 hour ago
GA
GA
Romaine, Re...Jon
Follow Up
Upstream + Anthropic - YC Credits
Hi Jon, Thanks for reaching out to…
3 hours ago
GA
GA
Arthur, Louis
Feedback Beta tester
Hello Louis, avec plaisir. Je suis dispo vendredi à 18h CET. Let me know, Arthur
4:50 PM
GA
me, Joseph, Patryk
Draft
Channels rules launch
Nice! I agree. I’m merging another small update this morning (delete…
11:53 AM
© 2026 Upstream Labs, Inc. All Rights Reserved.