Bring Transactional Email
to LangChain
Learn how to connect Mailjet to LangChain and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
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 and manage email operations through natural conversation.
What you can do
- Email Sending — Send transactional and marketing emails at scale
- Contact Management — Manage contact lists with properties and segmentation
- Template Management — Browse, create, and manage email templates
- Delivery Analytics — Track opens, clicks, bounces, and spam reports
- Campaign Management — Create and monitor email campaigns
- Statistics — Access detailed sending statistics and trends
How it works
- Subscribe to this server
- Enter your Mailjet API Key and Secret Key
- Start managing email from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Developers — integrate email sending with rich APIs
- Marketers — manage campaigns and contact lists
- Operations — monitor deliverability and sender reputation
Built-in capabilities (12)
Add email to contacts
Check account stats
) for a specific campaign ID. Check campaign stats
Get template content
List audience contacts
List contact lists
List saved templates
Check sending domains
List past campaigns
Send transactional email
Send using template
Add contact to list
Why LangChain?
LangChain's ecosystem of 500+ components combines seamlessly with Mailjet through native MCP adapters. Connect 12 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
Mailjet and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Mailjet to LangChain 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 | 4,000+ 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 Mailjet in LangChain
The Mailjet 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 LangChain 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
Mailjet for LangChain
Every tool call from LangChain to the Mailjet MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
Can I send both transactional and marketing emails?
Yes. Mailjet supports both transactional (triggered) and marketing (campaign) emails through the same API.
Does Mailjet require two API keys?
Yes. Mailjet uses API Key and Secret Key pair with Basic Auth against api.mailjet.com/v3.
Can I manage contact lists and segments?
Yes. Create and manage contact lists, set contact properties, and build segments with dynamic conditions.
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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