Build inbox voice: free AI skill | OpenKit

OpenKit offers build-inbox-voice as a free, open-source AI skill that runs in Claude and other agents. OpenKit builds custom AI skills, agents, and integrations for regulated industries. OpenKit is an ISO 27001 certified AI development partner based in Durham.

GmailOutlookApple Mail MIT

Build inbox voice

Studies how you actually write and generates a drafter skill.

Free Claude skill that studies how you actually write and generates an inbox-reply-drafter skill. Every triage draft then sounds like you.

  • Runs locally
  • No vendor account
  • MIT licensed
  • Yours to fork
Size
6 KB
Setup time
10 minutes
Licence
MIT
Works with
Gmail, Outlook, Apple Mail

Setup guide.

  1. Install

    Drop the skill into your AI tool. One command.

    $ npx @openkit/skills install build-inbox-voice
  2. First run

    Open your AI tool and call the skill by name. It'll ask for any context it needs.

the full source

Read the SKILL.md.

This is the same Markdown your AI reads when you call the skill. Edit it, fork it, ship your own version.

Reads a sample of your sent folder, infers tone, openings, sign-offs, common phrases — generates inbox-reply-drafter. From then on, every draft from inbox-triage sounds like you, not like a chatbot.

Setup

npx @openkit/skills install build-inbox-voice

How to use

Paste 20–30 of your recent sent emails into Claude and ask:

“Run build-inbox-voice on these.”

The skill writes a drafter skill into your skills folder. inbox-triage reads it on the next run.

FAQ

Common questions.

What does it read?

A sample of your sent folder. You decide the size.

Does it send anything?

Never. It reads to generate a drafter skill, then stops.

How often should I refresh?

Once a quarter is plenty. More often if your voice drifts.

Need a skill the library doesn't cover?

We build bespoke skills, agents, and AI integrations for regulated industries. Same approach as the library: open-source where it can be, governed where it must be.

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