01
Guided setup
Plain-language instructions, readiness checks, and small steps you can finish without a technical background.
Interactive guidebooks for the inbox you already use
Build an AI-assisted inbox you can actually trust.
Inbox OS walks you through Gmail + Gemini or Outlook + Copilot step by step—helping you organize email, surface priorities, draft faster, and follow up consistently. Nothing sends without your approval.
✓ One-time purchase
✓ Opens in any modern browser
✓ No email access required
Teach Gemini how you actually sound.
Create a practical Voice Card from messages you already wrote, then use it as a consistent drafting standard.
Step 2 of 4 · Generate your Voice CardSafe to copy
Review these examples of emails I wrote. Identify:
1. My typical sentence length and structure
2. How I open and close messages
3. Phrases I use—and phrases I avoid
4. How direct, warm, or formal I sound
1. My typical sentence length and structure
2. How I open and close messages
3. Phrases I use—and phrases I avoid
4. How direct, warm, or formal I sound
Start with the right edition
Built around your inbox and your work.
Choose the platform you already use, then pick the professional or commercial real estate playbook. We’ll point you to the right guide.
1 · Which inbox do you use?
2 · Which playbook fits?
Inbox OS: Gmail + Gemini
The complete professional setup for triage, drafting, priorities, and follow-up in Gmail.
$49Founding price · regularly $69
Get founding access →
Secure checkout opens in the Understudy store. Digital product; no subscription.
Not another AI course
A guided operating system for your inbox.
Open the guide in your browser and work through it at your own pace. Each module turns a broad AI capability into a specific, reviewable inbox routine.
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Command library
Ready-to-adapt commands for triage, summaries, drafting, scheduling, follow-up, and inbox maintenance.
Aa
Your Voice Card
A repeatable method for teaching the AI your tone, structure, boundaries, preferred phrases, and no-go language.
✓
Safety by design
Approval checkpoints, fact verification, and clear limits keep you in control of every message and decision.
32+
Capability reference
Know what your AI can do, what it cannot do, and when a feature depends on your workspace or plan.
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Lifetime updates
As Gmail, Outlook, Gemini, and Copilot evolve, your guide receives practical updates to stay useful.
The method behind the guide
AI works better when context and control come first.
The underlying drafting workflow was tested across real inboxes before the process was translated into Inbox OS.
78.4%usable with no more than minor edits
46 secmedian time to review a draft
3.7 hrsestimated saved per user each week
0messages sent automatically
Six-week beta · 42 users · 2,186 eligible threads. These results measure the underlying drafting workflow, not the guidebook itself. Individual results vary.
Why context changes the draft
Generic AI replythread only
Hi Sarah,
Thank you for following up. Tuesday at 2:00 PM works for me. Please send over a calendar invitation when you have a chance.
Best regards,
Alex
Grammatically fine. Could have been written by anyone.
Context-led replythread + voice
Sarah—
Tuesday at 2 works. I’ll bring the revised scope and the two open questions from last week so we can make the call in one pass.
Send the invite when ready.
Alex
Specific, useful, and still waiting for your review.
How it works
From overwhelmed to operational, one layer at a time.
Choose your stack
Follow the version written for Gmail + Gemini or Outlook + Copilot.
Set your rules
Define your safety boundaries, review habits, and personal writing standard.
Build the routines
Install practical workflows for priorities, drafts, follow-ups, and maintenance.
Run and refine
Use the commands, evaluate the output, and improve the system as you work.
Two playbooks
The same trustworthy system, shaped for different work.
Professional Edition
For founders, operators, consultants, executives, and anyone whose inbox drives the workday.
- Priority and action-item routines
- Reliable summaries and reply drafting
- Meeting, scheduling, and follow-up commands
- Gmail or Outlook version
Commercial Real Estate Edition
For brokers and operators managing active deals, owners, tenants, vendors, and time-sensitive follow-up.
- Deal and relationship context
- Owner, tenant, and vendor communication
- Tour and meeting follow-up
- Gmail or Outlook version
Founding pricing
Pick one guide—or get the whole system.
Introductory pricing is available to the first 20 customers. Each purchase includes the interactive guide and lifetime guide updates.
Professional
Choose Gmail + Gemini or Outlook + Copilot.
$49
- Complete interactive guidebook
- 24-command reference library
- Voice Card method
- Lifetime guide updates
Complete Suite
Professional + CRE for both Gmail and Outlook.
$129
- All four interactive guidebooks
- Both platform ecosystems
- Professional and CRE playbooks
- Lifetime guide updates
CRE Edition
Choose Gmail + Gemini or Outlook + Copilot.
$79
- CRE-specific interactive guide
- Deal and relationship workflows
- 24-command reference library
- Lifetime guide updates
A Gemini or Microsoft Copilot plan may be required for some features. Those subscriptions are not included.
Trust is the feature
The guide teaches a review-first system.
Inbox OS is an interactive HTML guide. It opens locally in your browser and does not connect to your inbox, upload your email, or send messages. You choose what to paste into Gemini or Copilot and review every output before acting.
No inbox connection
The guide itself has no account access and asks for no credentials.
Human approval
Drafts, facts, tone, recipients, and attachments stay subject to your review.
Designed to improve
Feedback loops help you refine commands and your Voice Card over time.
Coming later
Interested in deeper inbox automation?
We’re developing an optional automation service for people who want to take Inbox OS further. It isn’t available for purchase yet. Tell us about your inbox and we’ll let you know when it’s ready.
Questions
Before you start.
Is Inbox OS software?
It is an interactive guidebook that opens in your browser. It combines guided setup, copy-ready commands, references, and progress tracking. It does not connect to or modify your inbox.
Do I need to be technical?
No. The guide is written for working professionals, with small steps and plain-language explanations. If you can use Gmail or Outlook and paste a command into Gemini or Copilot, you can follow it.
Which version should I buy?
Choose your existing email platform first. Then pick Professional for a role-neutral system or CRE if your day revolves around deals, owners, tenants, vendors, and property communication. The Complete Suite includes all four versions.
Will it send emails for me?
No. Inbox OS is built around review and approval. The guide never connects to your account, and its recommended routines keep a human in the loop before anything is sent.
Do I need a paid Gemini or Copilot account?
You can use parts of the system with the tools available to you, but some capabilities may require an eligible Google Workspace, Gemini, Microsoft 365, or Copilot plan. The guide identifies feature dependencies where relevant.
What do “lifetime updates” include?
Updates to the purchased guide as supported platform features and recommended workflows evolve. It does not include separate future products, consulting, or third-party subscriptions.
Your inbox, with a system
Use AI to move faster—without giving up the final say.
Choose the guide written for your inbox, build the routines in order, and keep every important decision under your control.
Find my edition →