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The first MCP server for physical mail: send postcards and letters, manage lists and campaigns.
MailStream is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 86/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding MailStream to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.
mcp add app.mailstream/mailstream https://my.mailstream.app/mcpReview the upstream source before running this command.
{
"_meta": {
"io.modelcontextprotocol.registry/official": {
"status": "active",
"isLatest": true,
"updatedAt": "2026-07-20T19:11:44.63133Z",
"publishedAt": "2026-07-20T19:11:44.63133Z",
"statusChangedAt": "2026-07-20T19:11:44.63133Z"
}
},
"server": {
"name": "app.mailstream/mailstream",
"title": "MailStream",
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"remotes": [
{
"url": "https://my.mailstream.app/mcp",
"type": "streamable-http"
}
],
"version": "1.0.0",
"websiteUrl": "https://mailstream.app/developers/mcp-server",
"description": "The first MCP server for physical mail: send postcards and letters, manage lists and campaigns."
}
}