Software that keeps your inbox, contacts, and accounts yours.
TwinMail, TwinContacts, TwinVault, TwinHermes, and TwinSystem all do their work on your device. When something has to leave your machine, you see the exact payload first — and you can say no.
Five tools, one privacy standard.
Each product runs local-first and shares one consent model. Use one or all of them; each is built to hold up on its own.
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TwinMail
Run every inbox you're responsible for, without handing over a password.
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TwinContacts
The contact app that actually keeps your network perfect.
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TwinVault
Every account your household depends on, in a vault that never leaves your browser.
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TwinHermes
An always-on agent on a box you own.
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TwinSystem
One repo for the whole smart home.
Nothing leaves your machine without being shown to you first.
Local-first
The core of each product runs on your device. Cloud features are opt-in, disclosed, and shown to you before anything leaves your machine.
Explicit consent
Every notification and cloud action is opt-in. Consent decisions are recorded as immutable, timestamped events you can review and revoke.
No data brokering
We don't sell or share your contacts or messaging consent with third parties or affiliates for marketing. Export your data anytime.
Notes on privacy-first software.
One-click unsubscribe posts to a URL the sender chose
The redirect hole closed in one commit. The guard that still looked complete lost a DNS race three hours later; the fix that holds pins the IP it validated.
July 1, 2026 EngineeringSequence, don't sprawl
The send gate held before the AI seam existed, the rules engine stayed a pure function through three review gates, and the suite climbed from 78 tests to 350.
July 1, 2026One account across the whole suite.
Notifications, consent, and preferences live in one portal.