In partnership with You're not bad at writing emails. You're just missing one thing. Let me guess. You open a new email. Type "Hi [Name]," and then… nothing. You sit there. Close the tab. Tell yourself you'll do it later.

Later never comes. Or worse — you write something, read it back, cringe, delete the whole thing, and start over. Three drafts later, you send something mediocre just to get it off your plate. This isn't a writing problem.

It's a starting problem. And one prompt fixes it. We killed RAG and sandboxes. Here's what we built instead. Our documentation assistant had a problem. RAG pipelines only sent the model page fragments, making responses feel half-baked.

The fix was obvious: give the agent full doc access. Quality jumped, but startup hit 46 seconds and costs ballooned to $70K+/year.

The insight: the agent doesn't need a real filesystem. It just needs to think it's in one. We built ChromaFs, a virtual filesystem that translates standard UNIX commands into queries against our Chroma database. Every doc page becomes a file, every section a directory. The agent explores documentation the way a developer explores a codebase.

The results: startup dropped from 46s to ~100ms, marginal compute cost hit $0 per conversation, and output quality matched the full sandbox, with access control built in. ChromaFs now powers 30,000+ daily conversations for hundreds of thousands of users. No containers, no cold starts, no invoice surprises.

Mintlify powers docs for 20,000+ companies, reaching 100M+ people a year.



We just raised a $45M Series B led by a16z and Salesforce Ventures to keep building the knowledge layer for the agent era. Try Mintlify today! 〔 THE PROMPT 〕 ❝ "Write an email from me to [person/role] about [topic].

My goal is [what you want to happen after they read it]. My tone should be [professional / casual / direct / warm]. Keep it under [X] lines. Here's any context that matters: [optional details]." That's it.

Paste that into ChatGPT or Claude. Fill in the brackets. Hit enter. You'll have a solid first draft in under 30 seconds. Why this actually works Most people go to AI and type: "Write me an email." And they get something generic.

Something that sounds like it was written by a robot who's never met a human. The difference with this prompt is the goal line — "My goal is [what you want to happen]." That one detail forces the AI to write backwards from the outcome. Instead of just describing a situation, it crafts a message designed to do something — get a reply, book a call, smooth over a conflict, land an opportunity.

The AI isn't guessing what you want anymore. You told it. And that changes everything. Real examples you can steal Example 1 — Following Up After No Reply ❝ "Write an email from me to a potential client about a proposal I sent last week.





My goal is to get a yes or no so I can move on. My tone should be direct but not pushy. Keep it under 5 lines." Example 2 — Asking For a Favor ❝ "Write an email from me to a former colleague asking if they'd be willing to make an intro to their contact at [Company].

My goal is to make it easy for them to say yes.

Tone: warm and brief." Example 3 — Handling a Difficult Situation ❝ "Write an email from me to a client who's unhappy about a delay. My goal is to acknowledge the issue without over-apologizing and keep the relationship intact.

Tone: calm and professional." Same prompt structure. Completely different emails. All actually useful. Are you running your business on incomplete numbers? Most business owners have financials. Few have financial clarity.

BELAY's outsourced accounting team manages your books, tracks key metrics, and delivers timely reporting so you always know where your business stands — and what to do next. Download the Free Guide One more thing After ChatGPT gives you the draft — read it out loud once. If it sounds like you, send it.

If it sounds like a press release, go back and tell the AI: "Make this sound more like how I'd actually say it in conversation." That second pass is usually all it takes. 〔 YOUR ACTION FOR TODAY 〕 Pick one email you've been avoiding. Could be from yesterday, could be from three weeks ago. Open ChatGPT or Claude.

Use the prompt above. Send the email before you close the tab. That's the whole assignment. See you next week. — Career OS

📌 Struggling to Write Emails? This One Prompt Will Solve the Problem (Jun)
🏢 Career OS
📍 Jun