Private AI Email Writer

A private AI email writer that never sees the cloud

Short answer: Vault AI drafts, replies to, and rewrites emails right on your iPhone using Apple Intelligence — so the contents of your message never touch a server. No copy-pasting sensitive work or personal email into a website, no account, and it works offline.

Using a cloud chatbot to write email means pasting your actual words — client details, a complaint, a resignation, a sensitive HR note — into a company's servers. Most people do it anyway because it's convenient. A private email writer gives you the convenience without the exposure.

What a private email writer helps with

How to write emails privately with Vault AI

Vault AI tool grid including Email Draft and Cover Letter tools
  1. Open the Email Draft tool in Vault AI (one of 70+ built-in tools).
  2. Describe the email. "Reply to a client asking for a discount — polite but hold my price," or paste the message you're responding to.
  3. Get a draft instantly, generated on your phone. Ask for a different tone or a shorter version if you want.
  4. Copy it into Mail. Done — and nothing you wrote ever left the device.

Set a profile so it sounds like you

Add your name and role in Vault AI's profile (stored on device) and the email writer tailors drafts to your context — no need to re-explain who you are every time.

Write better email without giving it away

Free to download · $2.99 one-time unlock · No subscription

Download Vault AI on the App Store