Zero-access encryption
Your data is encrypted before it leaves your device. Even Proton's engineers can't read it β there's no master key to subpoena.
Proton encrypts your email, files, passwords, and traffic β end-to-end, zero-access, open-source. Founded by CERN scientists, hosted in Switzerland, used by 100M+ people who'd rather not be the product.

Built on principles, audited in practice
These four guarantees aren't features bolted on β they're how every product is built from day one.
Your data is encrypted before it leaves your device. Even Proton's engineers can't read it β there's no master key to subpoena.
Switzerland's privacy laws are among the strictest in the world. No CLOUD Act, no five-eyes data sharing, mandatory court order to disclose anything.
Every app's source code is public on GitHub. Independent firms (Securitum, SEC Consult) audit and publish the findings.
Use them individually or get them all on Proton Unlimited. Each replaces a Big Tech product 1:1 β with privacy you can verify, not just trust.

Replaces ExpressVPN / NordVPN / your ISP's tracking. The only VPN with a free tier that has no speed limit and no logs β proven in Swiss court.

Replaces Gmail / Outlook. End-to-end encrypted email between Proton users, encrypted-at-rest with PGP for messages to outside addresses.

Replaces 1Password / LastPass / Bitwarden. Encrypted passwords, 2FA codes, and Hide-My-Email aliases β all in one cross-device vault.

Replaces Google Drive / iCloud / Dropbox. Encrypted cloud storage with sharing controls β only people you explicitly invite can decrypt your files.
What you give up β and gain β by switching the four most-used apps in your day.
I migrated from Gmail to Proton Mail in an afternoon. The Hide-My-Email aliases alone cut my newsletter spam to zero β I can burn an alias when a vendor leaks it.
Proton VPN is the only one I've used that still works in China on Stealth protocol. Same Proton account, no extra subscription, just toggle it on.
Switched my family from 1Password to Proton Pass for the 2FA codes alone. Passkeys + Hide-My-Email is the combo that finally killed phishing for us.
Your data is encrypted on your device before it reaches Proton's servers. Even Proton employees with full admin access can't decrypt it β there's no master key. If a Swiss court orders Proton to hand over your inbox, what they hand over is gibberish.
Yes β all four Proton apps have one-click importers. Mail pulls your archive via IMAP, Drive bulk-uploads from Google Drive / Dropbox, Pass imports from 1Password / LastPass / Bitwarden / CSV. You can keep your old account live during migration.
Yes. Proton Free includes 1 Mail address with 1 GB, 5 GB Drive, unlimited Pass entries with passkeys + 2FA, and Proton VPN with no speed cap. It's funded by Unlimited subscribers, not ads. You can run a full Proton workflow on the free tier indefinitely.
Switzerland has the strongest privacy laws in the world, isn't part of the Five / Nine / Fourteen Eyes intelligence-sharing alliances, and isn't subject to the US CLOUD Act. Proton can only be compelled to disclose data by a Swiss court β and that data is end-to-end encrypted anyway.
Proton Unlimited bundles Mail (15 addresses + custom domain) + VPN (Plus tier) + Pass (Plus) + Drive (500 GB) + Calendar + Sentinel anti-fraud, for less than buying VPN + Mail individually. If you'd use two or more of the apps paid, Unlimited is cheaper. The product cards above link to each app's standalone subscription β Unlimited is available on the signup flow.
It does, because it makes "trust us" verifiable. Independent researchers (and audit firms like Securitum and SEC Consult) read Proton's published source code and report what they find. With closed-source Gmail or Outlook, you take the privacy claims on faith.
Proton Mail and Pass have web apps that work in any browser. VPN has a browser extension that doesn't require driver installs. Drive has a web app too. So even on locked-down work machines, you can usually access at least your personal Proton accounts.
Most people start with Proton VPN (free tier, instant install) and add Mail next. Pass and Drive follow once you've felt how the ecosystem fits together. There's no rush β and no lock-in.