msgvault
Archive a lifetime of email and chat. Offline search, analytics
...It lets users preserve large volumes of personal or organizational messages in a local archive. The project uses DuckDB to support fast aggregate queries across hundreds of thousands of messages. It includes a terminal interface, command-line tools, and an MCP server for connecting archived messages to AI assistants. Users can search, analyze, and read their message history conversationally through compatible AI clients. It also supports scheduled syncs, remote server mode, multi-account setups, and configuration options for personal Gmail or Google Workspace environments.