Proton is an encrypted email and online services platform that enables users to send messages, store files, and manage data with end-to-end and zero-access encryption.
Proton is a privacy-focused suite of online services designed to protect user data through end-to-end encryption and strong security practices. Originating with Proton Mail, an encrypted email service, Proton now includes secure calendar, cloud storage, and VPN solutions, all built around a zero-access architecture. Its primary purpose is to allow individuals and organizations to communicate, store files, and browse the internet without exposing sensitive information to providers, advertisers, or unauthorized third parties.
Key features include end-to-end encrypted email, support for custom domains, and open-source cryptographic implementations that can be independently audited. Proton Mail offers features such as encrypted contacts, message expiration, password-protected emails to non-Proton users, and robust spam and phishing protection. Proton Drive provides encrypted file storage and sharing, while Proton Calendar secures event details and invitations. Proton VPN extends privacy to network traffic, with no-logs policies and strong tunneling protocols to protect users on public or untrusted networks. All services are integrated under a single account with a consistent security model.
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