MailVault

MailVault is a robust, privacy-focused email client designed for users who want complete control over their email data. It functions as a full-featured email application that integrates with Gmail, Microsoft 365, Outlook.com, and any IMAP server, providing a seamless user experience across macOS, Windows, and Linux. What sets MailVault apart is its built-in vault system, which automatically backs up every message locally as a plaineml file. This means users can read, search, and reply to emails without relying on the server, and can securely delete messages from the server while retaining an offline copy. Its ultra-fast search capability allows users to browse through up to 50,000 messages in under 15 milliseconds, making it ideal for power users and professionals with large email archives. Additionally, MailVault emphasizes privacy and security, operating without telemetry, storing passwords securely in the OS keychain, and enabling AI features that run locally on the user’s machine. The core functionality is free, making it an attractive option for those seeking a secure, offline-capable email management solution.