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mcp/harbor
Verified official

mailsnail MCP

v0.6.0

io.github.iancollins27/mailsnail

Send USPS letters, postcards & certified mail from any agent. No signup; pay-per-piece via Stripe.

transport:stdio runtime:npm
View source Website

Target client

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add mailsnail -e MAIL_PROVIDER=<MAIL_PROVIDER> -e MAIL_API_BASE_URL=<MAIL_API_BASE_URL> -e CLICK2MAIL_USERNAME=<CLICK2MAIL_USERNAME> -e CLICK2MAIL_PASSWORD=<CLICK2MAIL_PASSWORD> -e LOB_API_KEY=<LOB_API_KEY> -e MAIL_MCP_ALLOW_LIVE=<MAIL_MCP_ALLOW_LIVE> -e MAIL_MCP_SPEND_CAP_USD=<MAIL_MCP_SPEND_CAP_USD> -- npx -y mailsnail

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.