Proton Mail provides end-to-end encrypted email services that protect user privacy through zero-access encryption, ensuring that even Proton's servers cannot read inbox contents. The service blocks email trackers, offers free and paid plans, and is trusted by over 100 million users and organizations. It also supports importing messages, calendars, and contacts from other providers in one click.
Funding
Funding not disclosed
Founders
Product
Problem
Mainstream email services like Gmail and Microsoft Outlook can technically scan user inboxes, using messages for targeted advertising, AI training, or data sharing. Email trackers embedded in messages also allow senders and advertisers to monitor what users read and click, following them across the web without consent.
Solution
Proton Mail provides a secure, encrypted email service based in Switzerland that ensures user privacy through zero-access encryption, meaning Proton never sees inbox contents on any plan. The service blocks email trackers to prevent senders and advertisers from monitoring user activity, and it is funded by subscribers rather than user data. Proton Mail offers free accounts that remain free forever, with paid upgrades supporting privacy-first email for everyone. Users can import their existing messages, calendars, and contacts from other providers in one click, making migration straightforward.
Target Audience
Primary customers are privacy-conscious individuals, journalists, activists, and businesses that require secure communication and protection from data mining and surveillance by mainstream email providers.
Features
- End-to-end encryption with zero-access architecture, ensuring Proton cannot read inbox contents on any plan
- Automatic email tracker blocking that prevents senders and advertisers from monitoring user behavior
- One-click import tool for migrating messages, calendars, and contacts from other email providers
- Free tier available with no phone number required for account creation
- Cross-platform support including iOS, Android, macOS, Windows, Linux, and a web app
- Bridge application for integrating Proton Mail with desktop email clients like Outlook and Thunderbird
- Additional privacy tools including Proton VPN, Proton Calendar, Proton Drive, and Proton Pass
- Compliance with GDPR, HIPAA, and ISO 27001 standards for business users