MailerSend MCP Server for OpenAI Agents SDK 10 tools — connect in under 2 minutes
The OpenAI Agents SDK enables production-grade agent workflows in Python. Connect MailerSend through Vinkius and your agents gain typed, auto-discovered tools with built-in guardrails. no manual schema definitions required.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerStreamableHttp
async def main():
# Your Vinkius token. get it at cloud.vinkius.com
async with MCPServerStreamableHttp(
url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
) as mcp_server:
agent = Agent(
name="MailerSend Assistant",
instructions=(
"You help users interact with MailerSend. "
"You have access to 10 tools."
),
mcp_servers=[mcp_server],
)
result = await Runner.run(
agent, "List all available tools from MailerSend"
)
print(result.final_output)
asyncio.run(main())
* 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
About MailerSend MCP Server
Connect your MailerSend account to any AI agent to automate your transactional messaging and domain management. This MCP server enables your agent to send single or bulk emails, monitor domain verification, and track email activity directly from natural language interfaces.
The OpenAI Agents SDK auto-discovers all 10 tools from MailerSend through native MCP integration. Build agents with built-in guardrails, tracing, and handoff patterns. chain multiple agents where one queries MailerSend, another analyzes results, and a third generates reports, all orchestrated through Vinkius.
What you can do
- Email Delivery — Send transactional emails instantly with support for HTML, text, and templates
- Bulk Operations — Send up to 500 emails in a single batch request for high-volume communications
- Domain Oversight — List sender domains, retrieve DNS settings, and trigger ownership verification checks
- Recipient Management — List and query recipients from your account database to track engagement
- Activity Auditing — Access real-time logs of email events (sent, delivered, opened, clicked) for any domain
- Message Insight — Retrieve complete metadata and lifecycle history for individual sent messages
The MailerSend MCP Server exposes 10 tools through the Vinkius. Connect it to OpenAI Agents SDK in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
How to Connect MailerSend to OpenAI Agents SDK via MCP
Follow these steps to integrate the MailerSend MCP Server with OpenAI Agents SDK.
Install the SDK
Run pip install openai-agents in your Python environment
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token from cloud.vinkius.com
Run the script
Save the code above and run it: python agent.py
Explore tools
The agent will automatically discover 10 tools from MailerSend
Why Use OpenAI Agents SDK with the MailerSend MCP Server
OpenAI Agents SDK provides unique advantages when paired with MailerSend through the Model Context Protocol.
Native MCP integration via `MCPServerSse`, pass the URL and the SDK auto-discovers all tools with full type safety
Built-in guardrails, tracing, and handoff patterns let you build production-grade agents without reinventing safety infrastructure
Lightweight and composable: chain multiple agents and MCP servers in a single pipeline with minimal boilerplate
First-party OpenAI support ensures optimal compatibility with GPT models for tool calling and structured output
MailerSend + OpenAI Agents SDK Use Cases
Practical scenarios where OpenAI Agents SDK combined with the MailerSend MCP Server delivers measurable value.
Automated workflows: build agents that query MailerSend, process the data, and trigger follow-up actions autonomously
Multi-agent orchestration: create specialist agents. one queries MailerSend, another analyzes results, a third generates reports
Data enrichment pipelines: stream data through MailerSend tools and transform it with OpenAI models in a single async loop
Customer support bots: agents query MailerSend to resolve tickets, look up records, and update statuses without human intervention
MailerSend MCP Tools for OpenAI Agents SDK (10)
These 10 tools become available when you connect MailerSend to OpenAI Agents SDK via MCP:
get_recipient_details
Get details for a specific recipient
get_sender_domain_details
Get details for a specific domain
get_sent_message_details
Get details for a specific sent message
list_domain_activity
List email activity for a specific domain
list_email_recipients
List all recipients in the account database
list_sender_domains
List all verified and unverified sender domains
list_sent_messages
List all sent email messages
send_bulk_transactional_emails
Send multiple transactional emails in one batch
send_transactional_email
Requires a JSON body with sender, recipient, and content (text/html) or template ID. Send a single transactional email
verify_sender_domain
Trigger a DNS verification check for a domain
Example Prompts for MailerSend in OpenAI Agents SDK
Ready-to-use prompts you can give your OpenAI Agents SDK agent to start working with MailerSend immediately.
"Send a transactional email to 'user@example.com' with subject 'Welcome' and body 'Hello!'."
"List all active sender domains in my account."
"Show recent opened events for domain ID '98765'."
Troubleshooting MailerSend MCP Server with OpenAI Agents SDK
Common issues when connecting MailerSend to OpenAI Agents SDK through the Vinkius, and how to resolve them.
MCPServerStreamableHttp not found
pip install --upgrade openai-agentsAgent not calling tools
MailerSend + OpenAI Agents SDK FAQ
Common questions about integrating MailerSend MCP Server with OpenAI Agents SDK.
How does the OpenAI Agents SDK connect to MCP?
MCPServerSse(url=...) to create a server connection. The SDK auto-discovers all tools and makes them available to your agent with full type information.Can I use multiple MCP servers in one agent?
MCPServerSse instances to the agent constructor. The agent can use tools from all connected servers within a single run.Does the SDK support streaming responses?
Connect MailerSend with your favorite client
Step-by-step setup guides for every MCP-compatible client and framework:
Anthropic's native desktop app for Claude with built-in MCP support.
AI-first code editor with integrated LLM-powered coding assistance.
GitHub Copilot in VS Code with Agent mode and MCP support.
Purpose-built IDE for agentic AI coding workflows.
Autonomous AI coding agent that runs inside VS Code.
Anthropic's agentic CLI for terminal-first development.
Python SDK for building production-grade OpenAI agent workflows.
Google's framework for building production AI agents.
Type-safe agent development for Python with first-class MCP support.
TypeScript toolkit for building AI-powered web applications.
TypeScript-native agent framework for modern web stacks.
Python framework for orchestrating collaborative AI agent crews.
Leading Python framework for composable LLM applications.
Data-aware AI agent framework for structured and unstructured sources.
Microsoft's framework for multi-agent collaborative conversations.
Connect MailerSend to OpenAI Agents SDK
Get your token, paste the configuration, and start using 10 tools in under 2 minutes. No API key management needed.