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Encryption
Mail is protected in transit with TLS. Advanced users can use PGP or S/MIME where supported by their clients.
Passwords
Use long unique passwords, avoid reuse, and rotate credentials after any suspected compromise.
Two-Factor Authentication
Enable two-factor authentication to protect sign-ins and sensitive account actions.
Spam and Phishing
Use spam controls, block and allow lists, suspicious-message reporting, and security activity logs.