Proton Mail Logo

Proton Mail is the largest end to end encrypted email hosting service. It was launched in 2014 by a team of scientists at CERN and MIT, led by co-founder Andy Yen. Proton Mail is headquartered in Geneva, Switzerland. It is owned by the non-profit Proton Foundation through its subsidiary Proton AG, which also operates Proton VPN, Proton Drive, Proton Calendar, Proton Pass and Proton Wallet. Proton Mail uses client-side encryption to protect email content and user data before they are sent to Proton Mail servers, unlike other common email providers such as Gmail and Outlook.com.