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TL;DR

MailSandbox is a Testing MCP server that lets Claude Code, Cursor, Windsurf and any MCP-compatible AI agent fast, zero-dependency email testing tool. Install in 1 minute with mcpizy install mailsandbox.

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MailSandbox

Testing

Last updated September 4, 2026 · By MCPizy team

Fast, zero-dependency email testing tool. Safe email sandbox for development.

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Repo audit: 51/100 — little recent maintenance, or missing licence and docs

Scored on licence, adoption, maintenance and documentation of btafoya/mailsandbox. We show the grade whether it flatters the server or not.

no commit for 11 months · 7 stars · MIT licence · 0 open issues

Read the full audit on CheckMCP

Install MailSandbox

Via MCPizy CLI (recommended):
mcpizy install mailsandbox
Or run directly:

We could not verify a published package or a reachable endpoint for this server, so we are not showing an install command that would fail. Checked 2026-08-11. Follow the repository's own instructions instead.

View on GitHub

Works with

Claude Code
Claude Desktop
Cursor
Windsurf
VS Code + Copilot
Any MCP Client

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Frequently asked questions

What is the MailSandbox MCP server?

MailSandbox is listed as an Testing Model Context Protocol server whose documented purpose is to let an MCP-compatible agent fast, zero-dependency email testing tool. Client support, permissions and authentication remain specific to the upstream project.

How do I install MailSandbox MCP with Claude Code?

The fastest way is the MCPizy CLI: run `mcpizy install mailsandbox` and MCPizy will add the server to your `.claude.json` automatically. You can also install it manually by adding an entry under `mcpServers` in `.claude.json` with the command `` and restarting Claude Code.

Does MCPizy charge to view or install MailSandbox MCP?

No. Reading this profile and copying its install guidance is free. Upstream software, API, account or usage costs are separate, and licence coverage should be checked from the linked source when available.

Does MailSandbox MCP work with Cursor and Windsurf?

The MCP standard is supported by those clients, but a specific server can still have client-specific setup or transport limits. Use the configuration shown on this page when present and verify the upstream instructions before installation.

What can I do with MailSandbox MCP?

Its documented purpose is to let an MCP-compatible agent fast, zero-dependency email testing tool. The exact tools, permissions and write capabilities depend on the server version and configuration shown by the upstream project.

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