How to Use the MailerSend MCP in Mastra AI

Q: Can I check my bounce rates with this setup?

Your agent can call listemailactivities to pull the raw logs. It then parses the bounces and updates your internal database.

Build resilient email workflows and automated retry logic with Mastra AI and the MailerSend MCP Server.

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Connect MailerSend MCP to Mastra AI

Create your Vinkius account to connect MailerSend to Mastra AI and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup MailerSend with Mastra AI

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Claude

Perplexity

Automate complex email sequences

Mastra AI handles failure better than most frameworks. When you hook up this MCP Server, your workflow can attempt to deliver a message using `send_transactional_email`. If the API rejects it, the engine automatically falls back to a different process. You set the exponential backoff. The agent waits, checks your quota with `get_account_limits`, and tries again. No dropped alerts. No manual intervention required.

Manage domain notifications programmatically

Infrastructure as code applies to your email stack too. Your MCP integration can map out your notification pipelines by calling `list_domain_webhooks`. It finds broken endpoints and flags them before a major campaign goes out. You need to know when a domain setup breaks. The workflow pulls `get_domain_details` on a schedule. If the DKIM records fail validation, it alerts the dev team immediately.

Sync templates across environments

Marketing teams constantly tweak copy. You do not want to redeploy your app for a typo. The MCP agent uses `list_email_templates` to fetch the current IDs and verifies them with `get_template_details`. Once verified, Mastra triggers `send_templated_email`. The workflow guarantees the right variables map to the right fields. If a variable is missing, the engine catches it before the API throws a 400 error.

Setup guide

Set up MailerSend MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All MailerSend tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "mailersend-alternative-mcp-client",
  servers: {
    "mailersend-alternative-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "MailerSend Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to MailerSend tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent MailerSend transactions"
);
console.log(result.text);

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by MailerSend. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

Why Choose Vinkius

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Common questions about MailerSend MCP in Mastra AI

Run npm install @mastra/mcp@latest. Instantiate the MCPClient with your server URL, call listTools(), and spread them into your agent's tool array.

Yes. You can enable requireToolApproval for the sending tools. A human reviews the payload before the agent actually fires it.

The framework's built-in workflow engine uses automatic retries. If you hit a 429 error, it backs off and tries the request again later.

Your agent can call list_email_activities to pull the raw logs. It then parses the bounces and updates your internal database.

The server touches sensitive delivery stats, template HTML, and recipient lists. Vinkius runs it in an ephemeral, zero-trust container that burns down the moment the workflow finishes.

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