Private · Intelligent · Yours

The email client for people who run their own world.

A fast, AI-powered desktop inbox that works with Gmail, Outlook, Proton or your own server — and never sends your mail to ours.

Start 14-day free trial See what it does

Works with Gmail · Outlook · Proton · iCloud · Fastmail · any IMAP

Built for the people email actually runs on

Founders & operators running multiple businesses
Agencies & consultants juggling client inboxes
Self-hosters & privacy-first professionals
Developers who live in their inbox

Private by architecture

Your mail stays on your server. AI runs on your own key. No tracking pixels, no inbox mined for ads. We literally can't read your email.

Genuinely intelligent

A Morning Brief that triages your unread into what needs you. AI compose, summarise, translate and smart labels — on your terms.

Built for power

Unified inbox across every account, keyboard-first, PGP, server-side rules, calendar and tasks. The speed of Superhuman, the freedom of your own stack.

Everything a power inbox needs — nothing that sells you out

Morning Brief

Open to an agenda, not a pile. AI sorts reply / waiting / FYI.

Any mailbox

Gmail, Outlook, Proton, iCloud, Fastmail, Zoho — or your own server.

AI on your key

Bring your own OpenRouter key. Your mail never touches our servers.

PGP & encryption

End-to-end encryption built in. App-lock and on-device security.

Server-side rules

Filters that run 24/7 on your server (Sieve), not just when open.

Offline-first

Read, search and queue sends with no connection. Syncs when back.

Phishing & auth shields

SPF/DKIM/DMARC badges, link checks, remote-image blocking.

Calendar & tasks

CalDAV calendar, a kanban, snooze, follow-ups — one window.

Why Helix

Gmail / Outlook

Free — because you're the product. Your mail is mined; you're locked to one provider.

Superhuman

Fast, but Gmail-only, in their cloud, no privacy story — and $30/mo.

Helix

Just as fast. Any provider. Private by design. AI on your own key. from £12/mo.

Pro

★ Founding Member — price locked for life

£12/mo £18

or £120/year · 14-day free trial · cancel anytime

Everything above, every account
AI features on your own OpenRouter key
Desktop (macOS · Windows · Linux); mobile coming
Licence works offline

No charge for 14 days. Card collected at checkout so it continues seamlessly.