Set up MailSandbox in Claude Desktop

communityunknownunknownno verified config · noindex

MailSandbox (a fork of Mailpit) is a fast, zero-dependency email testing tool & API with a web UI, SMTP server, Postmark API emulation, and MCP server for AI-assisted debugging.

01Configuration

# MailSandbox: no install method on record yet.

No runnable install method captured for this server yet, so a verified setup config can't be generated.

02Steps

Make sure Claude Desktop is installed and up to date.
Open claude_desktop_config.json and add the block above (merge into any existing mcpServers).
Provide any required API keys/credentials as environment variables.
Restart Claude Desktop and confirm MailSandbox’s tools appear.

03Other runtimes

Cursor Windsurf Cline Continue Goose VS Code OpenAI Agents SDK LangGraph CrewAI

04Provenance

config_sourcegenerated from captured install method

last_checked2026-06-29 07:53Z

sourcesAwesome MCP Servers (wong2) [p6]

Next step

Ship MailSandbox to your agents as a governed Loadout — config, scopes, and approval rules in one place.

Build a Loadout

See also: server page · is it safe? · alternatives