Before
A browser extension that auto-summarizes long email threads for busy executives
After
CA Chrome extension that adds a 'Summarize Thread' button to Gmail, providing 3-bullet summaries that capture decision history and conversation flow rather than just individual emails. Initially targeting product managers at 50+ person companies who spend significant time preparing for meetings by reading email thread context.
Per-question score table
What's the strongest evidence you have that someone actually wants this?
Needs a sharper customer, proof point, and next test.
What are your users doing right now to solve this problem, and what does that workaround cost them?
Needs a sharper customer, proof point, and next test.
Name the actual human who needs this most. What's their title and what consequence do they face?
Needs a sharper customer, proof point, and next test.
What's the smallest possible version of this that someone would pay real money for this week?
Needs a sharper customer, proof point, and next test.
What surprised you when you actually watched someone use this without helping them?
Needs a sharper customer, proof point, and next test.
If the world looks meaningfully different in 3 years, does your product become more essential or less?
Needs a sharper customer, proof point, and next test.
Homework
Three concrete next steps before you run the next session.
- 1Interview 5 PMs at different companies this week: ask how much time they spend on email prep and if they've ever paid for email tools
- 2Document exactly when and why people need thread context: record 10 specific instances where you used thread history before meetings
- 3Research and explain 3 recent changes (AI capabilities, remote work, email volume) that make this solution more viable now than 2 years ago
Keep using gstack on the web
/office-hours
- Run the full six-question workflow
- Get a refined V1 and grade
- Leave with concrete homework
- No terminal or local setup
All web skills
- 10 gstack skill runs every month
- Office Hours, CEO, Engineering, and Design
- Private results and saved history
- Follow-up emails
$19 / month
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