Upstream
★ 2/5 · Productivity
YC-backed AI email inbox on top of Gmail where agents sort, filter, draft replies in your voice, and automate follow-ups with optional human-agent collaboration.
Pros
- Automatically splits incoming mail into actionable categories (Primary, Needs Reply, VIP, Noise)
- Pre-drafts replies learned from your writing style and stored as personalized prompt
- Agents schedule meetings, pull receipts, and send follow-ups at optimal times
- Free tier available
- YC and Xavier Niel-backed funding
Cons
- Gmail-only integration (no Outlook or other email providers initially)
- Requires learning phase for draft quality
- Early-stage with potential API/integration changes
- Limited to email workflow automation
Cost
Free tier; Pro $20/month
Verdict
Best for Gmail users drowning in email who want AI to handle triage, prioritization, and drafting while maintaining a conversational tone.
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