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mcp/harbor
Verified official

zerosmtp MCP

v1.0.2

io.github.msgwing/zerosmtp

A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.

transport:stdio runtime:npm
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Target client

run in your project directory 

claude mcp add zerosmtp -- npx -y zerosmtp-mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

This listing does not declare its tools. Connect the server and your client will discover them on the handshake.