Bring Email Sandbox
to Windsurf
Learn how to connect Mailtrap to Windsurf 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 Windsurf?
Windsurf's Cascade agent chains multiple Mailtrap tool calls autonomously. query data, analyze results, and generate code in a single agentic session. Paste Vinkius Edge URL, reload, and all 12 tools are immediately available. Real-time tool feedback appears inline, so you see API responses directly in your editor.
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Windsurf's Cascade agent autonomously chains multiple tool calls in sequence, solving complex multi-step tasks without manual intervention
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Purpose-built for agentic workflows. Cascade understands context across your entire codebase and integrates MCP tools natively
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JSON-based configuration means zero code changes: paste a URL, reload, and all 12 tools are immediately available
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Real-time tool feedback is displayed inline, so you see API responses directly in your editor without switching contexts
Mailtrap in Windsurf
Mailtrap and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect Mailtrap to Windsurf 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 Windsurf
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 Windsurf 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 Windsurf
Every tool call from Windsurf 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 does Windsurf discover MCP tools?
Windsurf reads the mcp_config.json file on startup and connects to each configured server via Streamable HTTP. Tools are listed in the MCP panel and available to Cascade automatically.
Can Cascade chain multiple MCP tool calls?
Yes. Cascade is an agentic system. it can plan and execute multi-step workflows, calling several tools in sequence to accomplish complex tasks without manual prompting between steps.
Does Windsurf support multiple MCP servers?
Yes. Add as many servers as needed in mcp_config.json. Each server's tools appear in the MCP panel and Cascade can use tools from different servers in a single flow.
Server not connecting
Check Settings → MCP for the server status. Try toggling it off and on.