Bring Email Sandbox
to Claude Code
Learn how to connect Mailtrap to Claude Code and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
What is the Mailtrap MCP Server?
Connect your Mailtrap account to any AI agent and manage email testing and delivery through natural conversation.
What you can do
- Email Sending — Send transactional emails via the Mailtrap API
- Inbox Testing — Browse testing inboxes and inspect captured emails
- Message Analysis — Analyze email HTML, spam scores, and headers
- Delivery Analytics — Track opens, clicks, bounces, and delivery rates
- Project Management — Manage testing projects and inboxes
- Account Management — Switch between connected accounts and domains
How it works
1. Subscribe to this server
2. Enter your Mailtrap API Key and Account ID
3. Start testing and sending email from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Developers — test email flows safely in staging
- QA Engineers — verify email rendering and spam scores
- Operations — monitor production transactional delivery
Built-in capabilities (12)
Delete all emails in inbox
Delete captured email
Get domain details
Get message metadata
Get email HTML body
Get user accounts
List account projects
List messages in inbox
List virtual inboxes
List sending domains
Send email in production
Send test email to sandbox
Why Claude Code?
Claude Code registers Mailtrap as an MCP server in a single terminal command. Once connected, Claude Code discovers all 12 tools at runtime and can call them headlessly. ideal for CI/CD pipelines, cron jobs, and automated workflows where Mailtrap data drives decisions without human intervention.
- —
Single-command setup:
claude mcp addregisters the server instantly. no config files to edit or applications to restart - —
Terminal-native workflow means MCP tools integrate seamlessly into shell scripts, CI/CD pipelines, and automated DevOps tasks
- —
Claude Code runs headlessly, enabling unattended batch processing using Mailtrap tools in cron jobs or deployment scripts
- —
Built by the same team that created the MCP protocol, ensuring first-class compatibility and the fastest adoption of new protocol features
Mailtrap in Claude Code
Mailtrap and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect Mailtrap to Claude Code through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 3,400+ managed |
| Infrastructure | Self-hosted | Sandboxed V8 isolates |
| Credential handling | Plaintext in config | Vault + runtime injection |
| Data loss prevention | None | Configurable DLP policies |
| Kill switch | None | Global instant shutdown |
| Financial circuit breakers | None | Per-server limits + alerts |
| Audit trail | None | Ed25519 signed logs |
| SIEM log streaming | None | Splunk, Datadog, Webhook |
| Honeytokens | None | Canary alerts on leak |
| Custom domains | Not applicable | DNS challenge verified |
| GDPR compliance | Manual effort | Automated purge + export |
Why teams choose Vinkius for Mailtrap in Claude Code
The Mailtrap MCP Server runs on Vinkius-managed infrastructure inside AWS — a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts. All 12 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Claude Code only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
How Vinkius secures
Mailtrap for Claude Code
Every tool call from Claude Code to the Mailtrap MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I both test and send emails with Mailtrap?
Yes. Mailtrap supports both Email Testing (capturing emails in staging) and Email Sending (transactional delivery in production).
Does Mailtrap require an Account ID?
Yes. You need both an API Key and Account ID to authenticate via Bearer token against mailtrap.io/api.
Can I analyze spam scores and HTML rendering?
Yes. Mailtrap analyzes captured emails for spam score (SpamAssassin), blacklists, HTML errors, and client support.
How do I add an MCP server to Claude Code?
Run claude mcp add --transport http "" in your terminal. Claude Code registers the server and discovers all tools immediately.
Can Claude Code run MCP tools in headless mode?
Yes. Claude Code supports non-interactive execution, making it ideal for scripts, cron jobs, and CI/CD pipelines that need MCP tool access.
How do I list all connected MCP servers?
Run claude mcp in your terminal to see all registered servers and their status, or type /mcp inside an active Claude Code session.
Command not found: claude
Ensure Claude Code is installed globally: npm install -g @anthropic-ai/claude-code
Connection timeout
Check your internet connection and verify the Edge URL is reachable