Bring Transactional Email
to LangChain
Create your Vinkius account to connect Mailjet to LangChain and start using all 8 AI tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code. No hosting, no server setup — just connect and start using.
GDPR Free for SubscribersCompatible with every major AI agent and IDE
Gemini
What is the Mailjet MCP Server?
Connect your Mailjet account to any AI agent to automate your transactional messaging and email marketing workflows. This MCP server enables your agent to send emails using the v3.1 Send API, manage subscriber lists, and track campaign performance directly from natural language interfaces.
What you can do
- Transactional Delivery — Send single or batch emails with full support for HTML, attachments, and variables
- Audience Management — List all contacts, create new subscriber records, and manage contact lists (address books)
- Subscription Control — Add or remove contacts from specific lists and manage opt-in statuses programmatically
- Campaign Tracking — List historical campaigns and retrieve real-time performance statistics (opens, clicks, bounces)
- Metadata Oversight — Fetch detailed configuration and status for any campaign or subscriber collection
How it works
- Subscribe to this server
- Enter your Mailjet API Public Key and Secret Key
- Start managing your communications from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Email Marketers — Monitor campaign results and manage subscriber segments via simple natural language commands
- Developers — Quickly test email delivery and verify list logic directly from your IDE
- Operations Teams — Automate the synchronization of contact data and audit delivery performance effortlessly
Built-in capabilities (8)
Requires list ID and contact ID/Email. Subscribe a contact to a specific list
Requires at least an Email address. Add a new contact to the database
Get details for a specific campaign
Get performance statistics for a campaign
List all contacts in the Mailjet account
List all campaigns
List all contact lists
Requires a JSON body matching Mailjet v3.1 Send API structure. Send an email using Mailjet Send API v3.1
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Mailjet through native MCP adapters. Connect 8 tools via Vinkius and use ReAct agents, Plan-and-Execute strategies, or custom agent architectures. with LangSmith tracing giving full visibility into every tool call, latency, and token cost.
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The largest ecosystem of integrations, chains, and agents. combine Mailjet MCP tools with 500+ LangChain components
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Agent architecture supports ReAct, Plan-and-Execute, and custom strategies with full MCP tool access at every step
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LangSmith tracing gives you complete visibility into tool calls, latencies, and token usage for production debugging
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Memory and conversation persistence let agents maintain context across Mailjet queries for multi-turn workflows
Mailjet in LangChain
Why run Mailjet with Vinkius?
The Mailjet connection runs on our fully managed, secure cloud infrastructure. We handle the hosting, maintenance, and security so you don't have to deal with servers or code. All 8 tools are ready to work instantly without any complex setup.
You stay in complete control of your data. Your AI only accesses the information you approve, keeping your sensitive passwords and private details completely safe. Plus, with automatic optimizations, your AI works faster and more efficiently.
* Every connection is hosted and maintained by Vinkius. We handle the security, updates, and infrastructure so you don't have to write code or manage servers. See our infrastructure
Over 4,000 integrations ready for AI agents
Explore a vast library of pre-built integrations, optimized and ready to deploy.
Connect securely in under 30 seconds
Generate tokens to authenticate and link external services in a single step.
Complete visibility into every agent action
Audit live requests, latency, success rates, and active security compliance policies.
Optimize spending and track token ROI
Analyze real-time token consumption and cost metrics detailed by connection.
Explore our live AI Agents Analytics dashboard to see it all working
This dashboard is included when you connect Mailjet using Vinkius. You will never be left in the dark about what your AI agents are doing with your tools.
Mailjet and 4,000+ other AI tools. No hosting, no code, ready to use.
Professionals who connect Mailjet to LangChain through Vinkius don't need to write code, manage servers, or worry about security. Everything is pre-configured, secure, and runs automatically in the background.
Raw MCP | Vinkius | |
|---|---|---|
| Ready-to-use MCPs | Find and configure each manually | 4,000+ MCPs ready to use |
| Connection Setup | Manual coding & server setup | 1-click instant connection |
| Server Hosting | You host it yourself (needs 24/7 uptime) | 100% hosted & managed by Vinkius |
| Security & Privacy | Stored in plaintext config files | Bank-grade encrypted vault |
| Activity Visibility | Blind execution (no logs or tracking) | Live dashboard with real-time logs |
| Cost Control | Runaway AI token spend risk | Automatic budget limits |
| Revoking Access | Must delete files or code to stop | 1-click disconnect button |
How Vinkius secures
Mailjet for LangChain
Every request between LangChain and Mailjet is protected by our secure gateway. We automatically keep your sensitive data private, prevent unauthorized access, and let you disconnect instantly at any time.
Frequently asked questions
Which version of the Mailjet API does this server use?
This server uses Mailjet REST API v3 for resource management (contacts, lists, campaigns) and the modern v3.1 Send API for reliable email delivery.
Can I send bulk emails using the agent?
Yes, the send_transactional_email tool supports the full v3.1 structure, allowing you to include multiple message objects in a single call.
How do I find my API Key and Secret?
Log in to your Mailjet account and navigate to Account Settings > API Key Management to find or generate your credentials.
How does LangChain connect to MCP servers?
Use langchain-mcp-adapters to create an MCP client. LangChain discovers all tools and wraps them as native LangChain tools compatible with any agent type.
Which LangChain agent types work with MCP?
All agent types including ReAct, OpenAI Functions, and custom agents work with MCP tools. The tools appear as standard LangChain tools after the adapter wraps them.
Can I trace MCP tool calls in LangSmith?
Yes. All MCP tool invocations appear as traced steps in LangSmith, showing input parameters, response payloads, latency, and token usage.
MultiServerMCPClient not found
Install: pip install langchain-mcp-adapters
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