# Mailcheck MCP - Tools, Setup and Examples | FlyMy.AI

> Mailcheck MCP for Claude, Cursor and Codex. Messages, with 1 actions. Your API key. See setup, examples and pricing.

Page: https://flymy.ai/mcp/mailcheck/

MCP / Messaging

# Mailcheck MCP: messages

Mailcheck is an email verification service that helps businesses validate email addresses to ensure deliverability and reduce bounce rates. Connect it to Claude, Codex, Cursor or any MCP client through one FlyMy.AI MCP.

[Connect Mailcheck](https://flymy.ai/mcp/mailcheck/#connect) [What it can do](https://flymy.ai/mcp/mailcheck/#actions)

Your own API key, 1 action, Messaging

$ YOUR NEXT RUN

Claude Code, Codex, Cursor, Any agent

## Use Mailcheck MCP in your assistant

Paste this prompt into Claude Code, Codex, Cursor or any agent. It reads the guide and helps you connect.

```
Read https://flymy.ai/skill.md and https://flymy.ai/mcp/mailcheck.md. Help me connect Mailcheck MCP to this assistant. Then help me run this task: Use Mailcheck to mailcheck verify email. Ask me for the required inputs first and show the result.
```

[Open FlyMy.AI](https://app.flymy.ai/new-agent) [Download brief](https://flymy.ai/mcp/mailcheck.md)

## What Mailcheck MCP can do

1 action in the FlyMy.AI catalog, the most used first. Your agent finds them through search_tools and calls the one the task needs.

| Action | What it does |
|---|---|
| [#](https://flymy.ai/mcp/mailcheck/#method-MAILCHECK_MAILCHECK_VERIFY_EMAIL) `MAILCHECK_MAILCHECK_VERIFY_EMAIL` | Verify provided email address. |

## Ask your agent

Requests to paste as they are. Each one runs on the actions named under it.

**“Use Mailcheck to mailcheck verify email. Ask me for the required inputs first and show the result.”** uses `MAILCHECK_MAILCHECK_VERIFY_EMAIL`

**“Explain what information you need before the call when I use Mailcheck to mailcheck verify email.”** uses `MAILCHECK_MAILCHECK_VERIFY_EMAIL`

**“Summarize the returned result when I use Mailcheck to mailcheck verify email.”** uses `MAILCHECK_MAILCHECK_VERIFY_EMAIL`

## Connect Mailcheck in a minute

One MCP for every integration. Add it once, then every MCP in the catalog is a request away.

1. 01 ### Add FlyMy.AI Add the FlyMy.AI MCP to your assistant with one of the commands below and sign in. No key to copy.
2. 02 ### Add your Mailcheck API Key Paste it into the Mailcheck [connection settings](https://app.flymy.ai/mcp-configs#mailcheck) once; it stays with FlyMy.AI, never in a prompt or a chat.
  - **Mailcheck API Key** - The API key used for authenticating requests to the Mailcheck/UserCheck API. [Get API key →](https://app.usercheck.com)
3. 03 ### Ask Paste a request from this page. Every run shows what it cost.

Claude Code

```
claude mcp add --transport http flymyai https://mcp-agents.flymy.ai/mcp
```

Then run /mcp in Claude Code and sign in.

Codex

```
codex mcp add flymy --url https://mcp-agents.flymy.ai/mcp
```

Then run codex mcp login flymy to sign in.

claude.ai and Claude Desktop

```
https://mcp-agents.flymy.ai/mcp
```

Settings, Connectors, Add custom connector: paste this URL.

## Pay per run

FlyMy.AI bills the run: the model and the tool's seconds. Calls go to your own Mailcheck account, under its plan and limits. No seats and no minimum.

[See usage pricing →](https://flymy.ai/pricing/)

## More Messaging MCPs

Email, chat, SMS and notifications.

### Telegram Bot

Telegram bot send/receive - closest to an SMS bot

7 actions / your API key

Link: https://flymy.ai/mcp/telegram-bot/

### Telegram

Personal Telegram via your own account - DM/read anyone, resolve @username/contacts

66 actions / phone login

Link: https://flymy.ai/mcp/telegram/

### Mail

Transactional email via FlyMyAI relay

1 action / no key

Link: https://flymy.ai/mcp/mail/

### Slack Bot

Slack Bot: post and read as the FlyMyAI bot in channels it was added to

8 actions / sign in

Link: https://flymy.ai/mcp/slack-bot/

### Gmail

Gmail is Google's email service, featuring spam protection, search functions, and seamless integration with other G Suite apps for productivity

23 actions / sign in

Link: https://flymy.ai/mcp/gmail/

### Slack

Slack as you: search messages and files, read and post in channels and DMs, threads, files, canvases, lists, reminders, user groups

120 actions / sign in

Link: https://flymy.ai/mcp/slack/

## Go to the source

[Mailcheck in the docs →](https://docs.flymy.ai/mcp/apps/mailcheck), [Mailcheck connection settings →](https://app.flymy.ai/mcp-configs#mailcheck), [Mailcheck website →](https://www.usercheck.com/), [Every MCP in the catalog →](https://flymy.ai/mcp/#catalog), [Usage pricing →](https://flymy.ai/pricing/)

From the FlyMy.AI platform catalog of 2026-11-03: name, description, actions and setup as the platform lists them. Examples are requests to paste, not recorded runs.

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For agents: the FlyMyAI operating guide (sign up, connect, run models, tools and agents) is https://flymy.ai/skill.md, and https://flymy.ai/llms.txt lists the other pages and the documentation.