How do I connect my Mailosaur account?

You subscribe to the MCP on Vinkius and enter your Mailosaur API Key. Once connected, your AI client can immediately start using the Mailosaur capabilities.

Which AI clients can I use with this MCP?

You can use any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.

Can I use this for SMS testing?

Yes, the MCP allows your agent to retrieve and manage SMS messages just like email messages.

How do I find a specific email sent to a test user?

You can simply ask your agent to search for messages in a specific server using criteria like the recipient's address or the subject line.

Is it possible to clear my test inboxes automatically?

Yes, you can instruct your agent to clear an entire server inbox or delete specific messages one by one.

How do I find my Server ID?

Use the list_virtual_servers capability to see a comprehensive list of all servers in your account along with their unique IDs.

Can I search for messages by recipient email?

Yes, use the search_server_messages capability and provide a JSON criteria object with the sentTo field.

Does Mailosaur support SMS messages?

Absolutely. Mailosaur treats SMS messages similarly to emails. You can list and search for them within your virtual servers just like email content.

An astronaut overseeing a futuristic data hub

Download PDF Markdown Version

Connect Mailosaur to ChatGPT, Claude and Gemini

Set it up once and it works in ChatGPT, Claude, Cursor, and any other client you love. It all runs safely in the background, so you can relax and focus on what really matters. Let your agent handle email and SMS validation workflows.

Ask AI about this Connector

Developed, maintained, and hosted by Vinkius.

MCP VERIFIED · PRODUCTION READY · VINKIUS GUARANTEED

Waiting for input…

Works with modern AI clients that support MCP, including ChatGPT, Claude, Cursor, and more.

Your AI does the work. We keep it safe and sound.

No other AI tool gives you this. Your workflow runs in the client you already love, your account stays protected, and you decide what the agent can and cannot do. It is the whole reason to make the switch.

Each Connector lives inside our infrastructure, the same place where your workflow runs. The three things below are already part of it, working quietly in the background so you never have to think about them. Nothing to add, nothing to set up, nothing to worry about.

V8 Isolate01

Each Connector runs inside its own sealed environment.

Each Connector runs inside its own sealed V8 runtime — no access to your files, your system, or other servers. A Connector never sees past its own request.

Kill Switch02

One switch stops every agent. Instantly.

One action deactivates every Connector, revokes every token, and ends every session at once. AI Governance keeps the record.

FinOps per User03

Spending limits that pause instead of surprise.

Every user keeps their own connections and credentials, isolated from everyone else. Anything that would cross your spending limit is held for your approval, not billed.

Three controls, built into the layer your AI connects through.

Curated set · 8 capabilities

We ship only the actions that matter.

Capability set01 / 02

01-04

4 capabilities in this set.

Part of 8 available through Mailosaur.

01
Delete specific message
This capability removes a single message from a virtual inbox permanently.
02
Get message content
Use this to pull the full text or HTML content from a specific message for inspection.
03
List server messages
This capability retrieves a list of all messages currently sitting in a specific virtual server.
04
List virtual servers
This capability returns a list of all your Mailosaur virtual servers to help you find the right server ID.

Capability set02 / 02

05-08

4 capabilities in this set.

Part of 8 available through Mailosaur.

05
Clear server inbox
This capability wipes every message out of a designated virtual server inbox.
06
Create virtual server
Use this to spin up a brand new virtual server or inbox for a fresh testing environment.
07
Get server details
This capability fetches specific configuration and routing information for a single virtual server.
08
Search server messages
This capability finds specific messages within a server using criteria like the sender, recipient, or subject.

Real work

What teams actually run

Automated QA Verification

An agent checks if a password reset email arrived and validates the link inside the message.

CI/CD Integration Testing

Your agent creates a new virtual server to isolate a specific test run and then clears it afterward.

Email Template Auditing

You ask your agent to pull the HTML of a recent email to check for rendering issues.

SMS Code Validation

Your agent retrieves a one-time passcode from an incoming SMS to complete a login flow test.

Automate a task

Put Mailosaur to work on one thing.

Step-by-step automations your AI runs through this Connector: the workflow, the prompts to start with, and the exact capabilities behind each move.

How to verify messages

One connector, every AI

Mailosaur works with the most popular AI clients.

These are the most popular clients, each with a step-by-step guide: one link, set up once, with governance and visibility built in. And because everything runs on the MCP standard, the same connection also works in any other compatible client — nothing to rebuild.

Building your own app? The connector is yours to use.

You don't need a client to put Mailosaur to work: the same hosted connection plugs into your own applications and agent code, with the same governance on every request. Build with it, chat with it — one connection for both.

Observed, not estimated

894ms average. Fast in production.

Mailosaur is checked daily against the live service.

Daily averagePeak 1066ms

Oct 3Today

Fastest day: 770ms
Slowest day: 1066ms
14-day trend: Improving-8%

Connect your client

One URL. Every client.

Activate the Connector, copy your link, and paste it into the client you already use. 8 capabilities arrive ready to run.

Preview access · not provider authentication

The vk_preview_* token belongs to Vinkius preview infrastructure. It lets Claude discover and display the capabilities of Mailosaur, so you can see the experience inside your AI.

It does not authenticate your account with Mailosaur. Actions requiring credentials or live account data may not run until you activate the Connector and authorize the service.

Mailosaur Connector

You're all set. Choose your MCP client and follow the setup instructions.

Connector linkhttps://edge.vinkius.com/vk_preview_oGquZ3D1oukaQwLmUv9kMRZ2ZwtLzdUGGJucFqsL/mcp

Claude Desktop

Follow the steps below to connect in seconds.

1In Claude Desktop, open Settings → Connectors.
2Click “Add custom connector” and paste the connector link above as the remote MCP server URL.
3Click Add and start a new chat — Mailosaur capabilities are ready to use.

Configuration · claude_desktop_config.jsonCopy

{
  "mcpServers": {
    "mailosaur-mcp": {
      "url": "https://edge.vinkius.com/vk_preview_oGquZ3D1oukaQwLmUv9kMRZ2ZwtLzdUGGJucFqsL/mcp"
    }
  }
}

Claude
ChatGPT
Cursor
VS Code
Windsurf
Claude Code
JetBrains
Cline

Step-by-step instructions for each client are in the guide. How to connect

Guided setup for Claude? Set up Mailosaur in Claude and other AIs

See all the AI clients this connector works with ↑

Who it's for

Built for the work Mailosaur owners hand off.

This MCP is built for technical teams who need to verify automated communications without manual inbox checking.

01
QA Engineers
They hand off the task of verifying transactional email and SMS codes to their agent.
02
Developers
They use the agent to inspect incoming test emails directly from their IDE.
03
Operations Teams
They use the agent to monitor and audit automated communication flows.

FAQ

Questions Mailosaur owners ask.

01
How do I connect my Mailosaur account?
You subscribe to the MCP on Vinkius and enter your Mailosaur API Key. Once connected, your AI client can immediately start using the Mailosaur capabilities.
02
Which AI clients can I use with this MCP?
You can use any MCP-compatible client, including Claude, Cursor, Windsurf, and VS Code.
03
Can I use this for SMS testing?
Yes, the MCP allows your agent to retrieve and manage SMS messages just like email messages.
04
How do I find a specific email sent to a test user?
You can simply ask your agent to search for messages in a specific server using criteria like the recipient's address or the subject line.
05
Is it possible to clear my test inboxes automatically?
Yes, you can instruct your agent to clear an entire server inbox or delete specific messages one by one.
06
How do I find my Server ID?
Use the list_virtual_servers capability to see a comprehensive list of all servers in your account along with their unique IDs.
07
Can I search for messages by recipient email?
Yes, use the search_server_messages capability and provide a JSON criteria object with the sentTo field.
08
Does Mailosaur support SMS messages?
Absolutely. Mailosaur treats SMS messages similarly to emails. You can list and search for them within your virtual servers just like email content.

Explore

More in Productivity

Connect Mailosaur to Claude, Cursor, ChatGPT & more

Your AI does the work. We keep it safe and sound.

Each Connector runs inside its own sealed environment.

One switch stops every agent. Instantly.

Spending limits that pause instead of surprise.

We ship only the actions that matter.

01-04

Delete specific message

Get message content

List server messages

List virtual servers

05-08

Clear server inbox

Create virtual server

Get server details

Search server messages

What teams actually run

Automated QA Verification

CI/CD Integration Testing

Email Template Auditing

SMS Code Validation

Building your own app? The connector is yours to use.

Mailosaur Connector

Claude Desktop

QA Engineers

Developers

Operations Teams

How do I connect my Mailosaur account?

Which AI clients can I use with this MCP?

Can I use this for SMS testing?

How do I find a specific email sent to a test user?

Is it possible to clear my test inboxes automatically?

How do I find my Server ID?

Can I search for messages by recipient email?

Does Mailosaur support SMS messages?

MailSlurp AI Connector

Katalon TestOps (AI Test Management) AI Connector

Testim AI Connector

Mailinator AI Connector

Suggestions

Mailsac AI Connector

TestRail AI Connector

EmailOctopus AI Connector

EmailOctopus AI Connector