Secure and anonymous email service with strong OpenPGP encryption and unique privacy features.
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CounterMail implements an additional cryptographic layer specifically designed to protect against MITM attacks and safeguard user identity. While OpenPGP encrypts email content, this extra layer enhances security where standard SSL might not be sufficient.
The diskless web servers operate without hard drives, booting instead from a CD-ROM. This design prevents the logging of IP addresses to a physical disk, enhancing user anonymity and ensuring no data is left behind if a server is compromised.
All email messages are encrypted on the client side (on the user's computer) using OpenPGP with 4096-bit encryption keys before being sent to CounterMail's servers. This means that even though the mail servers use hard drives for storage, they only ever store already encrypted messages.
Yes, CounterMail provides IMAP server access, allowing users to integrate their own email clients. The service supports Windows, MacOS X, and Linux operating systems.
The CounterMailEngine, running on the user's computer, is responsible for encrypting outgoing email bodies with the recipient's public key and decrypting incoming email bodies with the user's private key. This ensures end-to-end encryption directly on the client side.
Source: countermail.com