Mailsac MCP Server for Mastra AI 9 tools — connect in under 2 minutes
Mastra AI is a TypeScript-native agent framework built for modern web stacks. Connect Mailsac through Vinkius and Mastra agents discover all tools automatically. type-safe, streaming-ready, and deployable anywhere Node.js runs.
ASK AI ABOUT THIS MCP SERVER
Vinkius supports streamable HTTP and SSE.
import { Agent } from "@mastra/core/agent";
import { createMCPClient } from "@mastra/mcp";
import { openai } from "@ai-sdk/openai";
async function main() {
// Your Vinkius token. get it at cloud.vinkius.com
const mcpClient = await createMCPClient({
servers: {
"mailsac": {
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
},
});
const tools = await mcpClient.getTools();
const agent = new Agent({
name: "Mailsac Agent",
instructions:
"You help users interact with Mailsac " +
"using 9 tools.",
model: openai("gpt-4o"),
tools,
});
const result = await agent.generate(
"What can I do with Mailsac?"
);
console.log(result.text);
}
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 Mailsac MCP Server
Connect your Mailsac account to any AI agent to automate your email testing and inbox management. This MCP server enables your agent to reserve private email addresses, retrieve and search for messages, and inspect HTML or plain text bodies directly from natural language interfaces.
Mastra's agent abstraction provides a clean separation between LLM logic and Mailsac tool infrastructure. Connect 9 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.
What you can do
- Inbox Oversight — List and manage your reserved (enhanced) addresses and custom domains
- Instant Retrieval — Fetch a list of messages received by any address in your account instantly
- Content Extraction — Retrieve sanitized HTML or raw plain text bodies to extract verification codes or links
- Inbox Maintenance — Permanently delete individual messages or clear entire inboxes via simple commands
- Infrastructure Management — Reserve new private addresses programmatically for isolated testing flows
- Global Search — Query messages across all your addresses using advanced search parameters (requires paid tier)
The Mailsac MCP Server exposes 9 tools through the Vinkius. Connect it to Mastra AI 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 Mailsac to Mastra AI via MCP
Follow these steps to integrate the Mailsac MCP Server with Mastra AI.
Install dependencies
Run npm install @mastra/core @mastra/mcp @ai-sdk/openai
Replace the token
Replace [YOUR_TOKEN_HERE] with your Vinkius token
Run the agent
Save to agent.ts and run with npx tsx agent.ts
Explore tools
Mastra discovers 9 tools from Mailsac via MCP
Why Use Mastra AI with the Mailsac MCP Server
Mastra AI provides unique advantages when paired with Mailsac through the Model Context Protocol.
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add Mailsac without touching business code
Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
TypeScript-native: full type inference for every Mailsac tool response with IDE autocomplete and compile-time checks
One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure
Mailsac + Mastra AI Use Cases
Practical scenarios where Mastra AI combined with the Mailsac MCP Server delivers measurable value.
Automated workflows: build multi-step agents that query Mailsac, process results, and trigger downstream actions in a typed pipeline
SaaS integrations: embed Mailsac as a first-class tool in your product's AI features with Mastra's clean agent API
Background jobs: schedule Mastra agents to query Mailsac on a cron and store results in your database automatically
Multi-agent systems: create specialist agents that collaborate using Mailsac tools alongside other MCP servers
Mailsac MCP Tools for Mastra AI (9)
These 9 tools become available when you connect Mailsac to Mastra AI via MCP:
delete_inbox_message
Permanently remove a message from an inbox
get_html_message_body
Get the sanitized HTML body of a specific message
get_plain_text_body
Get the plain text body of a specific message
list_custom_domains
List custom domains linked to the account
list_inbox_messages
List messages in a specific inbox
list_reserved_addresses
List all reserved (enhanced) email addresses
release_reserved_address
Delete/Release a reserved email address
reserve_new_address
Reserve a specific email address
search_account_messages
Requires a paid Mailsac tier. Use query params like to, from, subject. Search for messages across all addresses
Example Prompts for Mailsac in Mastra AI
Ready-to-use prompts you can give your Mastra AI agent to start working with Mailsac immediately.
"List all my reserved email addresses in Mailsac."
"Fetch the plain text content of the last email sent to 'test-user@mailsac.com'."
"Reserve a new private address 'automation-flow@mailsac.com'."
Troubleshooting Mailsac MCP Server with Mastra AI
Common issues when connecting Mailsac to Mastra AI through the Vinkius, and how to resolve them.
createMCPClient not exported
npm install @mastra/mcpMailsac + Mastra AI FAQ
Common questions about integrating Mailsac MCP Server with Mastra AI.
How does Mastra AI connect to MCP servers?
MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.Can Mastra agents use tools from multiple servers?
Does Mastra support workflow orchestration?
Connect Mailsac 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 Mailsac to Mastra AI
Get your token, paste the configuration, and start using 9 tools in under 2 minutes. No API key management needed.