Envelope
Your own IMAP/SMTP mailboxes as agent tools, with per-agent policy and human-approved sends.
Install
Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).
https://github.com/tymrtn/U1F4E7/releases/download/v1.3.26/envelope-1.3.26.mcpbFrequently asked questions
What is Envelope?
Your own IMAP/SMTP mailboxes as agent tools, with per-agent policy and human-approved sends.
How do I install Envelope?
Follow the installation steps in its documentation, shown on this page and in its repository.
Does Envelope need an API key?
Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.
Is Envelope open source?
Its code is public on GitHub, but the repository does not declare a standard license.
Who maintains Envelope?
It is published by tymrtn. AI.tn lists it but does not maintain or endorse it.
From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.