# Mailtrap MCP for AI Agents AI Agent Connect

> Mailtrap helps you test and debug emails in a sandbox before they hit production. You can preview layouts, check spam scores, and analyze headers. It lets your AI agent handle the heavy lifting of managing test inboxes and tracking delivery analytics so you don't have to manually check every single outgoing message.

## Overview
- **Category:** developer-tools
- **Price:** Free
- **Endpoint:** https://edge.vinkius.com/vk_preview_Ad5Juop0aQx2ay54WiDoJvVK7YtPyDjMRVyTPy0Y/ai-agent-connect
- **Tags:** email-sandbox, smtp-testing, email-debugging, html-analysis, spam-scoring, transactional-email

## Description

Mailtrap lets you connect your email testing environment directly to your AI agent. Instead of jumping between tabs to check if a password reset email rendered correctly or if it's going to land in a spam folder, you can just ask your agent to do it. You can have your agent scan captured emails for specific HTML issues, check the spam score of a new template, or pull delivery stats for a specific project. It makes it easy to manage multiple testing projects and switch between different sending domains without leaving your primary workspace. Since Vinkius makes it easy to manage these connections, you can keep your production environment safe while your agent handles the repetitive work of verifying transactional flows. You get a clear picture of how your emails are performing across different inboxes without ever sending a single real message to a customer.

## Tools

### clear_sandbox_inbox
Wipe all messages from a specific test inbox. Use this to reset your environment for a fresh test run.

### delete_sandbox_message
Remove a specific captured email from your sandbox. This helps you clean up specific test results.

### get_domain_status
Check the current status and details of a specific sending domain. This helps you verify if your domain is ready for use.

### get_message_html
Pull the raw HTML body from a captured email message. Use this to inspect the code of a rendered email.

### get_message_details
Get the metadata and headers for a specific message. This is great for checking auth passes and spam scores.

### list_accessible_accounts
See all the Mailtrap accounts you have connected. Use this to manage multiple user profiles.

### list_verified_domains
View all domains that are currently verified for sending. This ensures you know which domains are active.

### list_sandboxes
See a list of all your active virtual testing inboxes. You can use these to organize different test flows.

### list_sandbox_messages
List the messages currently sitting in a specific sandbox. This helps you see what has been captured so far.

### list_mailtrap_projects
View all the projects organized in your account. Use this to keep different client work separated.

### send_production_email
Send a real email to a production recipient. This tool allows for live transactional sending via your agent.

### send_test_email
Send a test email to a sandbox for previewing. This is the safest way to verify your email templates.

## Prompt Examples

**Prompt:** 
```
Show me the last 5 emails in my Staging inbox.
```

**Response:** 
```
I found 5 messages in the Staging sandbox. The most recent one is 'Password Reset' received 2 minutes ago. It has a spam score of 0.2, which is great. The HTML size is 34KB.
```

**Prompt:** 
```
What's the spam score for the last email we sent?
```

**Response:** 
```
The last message, 'Invoice #442', has an overall spam score of 2.1. It passed all 18 blacklist checks and both SPF and DKIM records are valid. I'd recommend checking the text-to-image ratio to keep it low.
```

**Prompt:** 
```
Give me a summary of the delivery stats for the Welcome Series project.
```

**Response:** 
```
Here are the stats for 'Welcome Series' over the last 7 days:

- Total Sent: 4,200
- Delivered: 4,150 (98.8%)
- Bounces: 50
- Open Rate: 42%
- Click Rate: 12%
```

## Capabilities

### Send test emails to a sandbox
Send emails to a virtual inbox for previewing without hitting real addresses.

### Browse captured messages
Inspect any email that has landed in your test sandbox.

### Analyze HTML and spam scores
Get the raw code and spam risk metrics for your outgoing messages.

### Track delivery analytics
Pull data on opens, clicks, and bounces for your projects.

### Manage testing projects
Switch between different domains and inboxes through your agent.

### Wipe test inboxes
Clear out old messages to keep your sandbox clean for new tests.

## Use Cases

### Verifying a new sign-up flow
A developer wants to check if a new sign-up email renders correctly on mobile. They ask the agent to send a test email and check the HTML.

### QA layout verification
A QA engineer needs to verify a new marketing blast. They ask the agent to check the spam score and headers for the last 10 messages.

### Monitoring bounce rates
An ops lead wants to see why emails are bouncing. They ask the agent to pull the delivery analytics for a specific project.

### Cleaning test environments
A dev needs to clear out a cluttered test inbox. They ask the agent to wipe the sandbox so they can start a fresh test run.

## Benefits

- Stop worrying about spam. Use get_message_details to check spam scores and headers before you go live.
- See exactly what users see. Use get_message_html to pull the rendered body of any captured email.
- Manage multiple projects easily. Use list_mailtrap_projects and list_sandboxes to organize different testing environments.
- Keep production clean. Use send_test_email to verify flows without ever reaching a real customer.
- Track your success. Use get_domain_status and other analytics to monitor delivery rates and bounces.
- Save time on cleanup. Use clear_sandbox_inbox to quickly reset your testing environment for the next run.

## How It Works

The bottom line is you get a way to manage your entire email testing lifecycle through a natural conversation with your agent.

1. Subscribe to the Connector and grab your Mailtrap API Key and Account ID.
2. Connect your credentials to your AI client.
3. Ask your agent to send test emails, check inboxes, or pull analytics.

## Frequently Asked Questions

**Can I use Mailtrap MCP to test my production emails?**
Yes, it has a specific tool for production, but it's primarily designed for testing in a sandbox environment.

**Does Mailtrap MCP help with spam scores?**
Yes, it pulls the score and headers for your messages so you can check if they are likely to be flagged.

**How do I switch between different test inboxes?**
You can just ask your agent to switch to a specific sandbox or project name.

**Can it check if my HTML is broken?**
Yes, it can pull the HTML body of any captured email directly into your chat for inspection.

**Does this Connector send emails to real people?**
Only if you specifically use the production tool. Most users use it to send test emails to a sandbox.

**Can I clear my test inbox?**
Yes, your agent can wipe the sandbox for you to keep your testing environment clean.

**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.