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 MailcheckWhat it can do
Your own API key1 actionMessaging

$ YOUR NEXT RUN

Claude CodeCodexCursorAny 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.AIDownload brief

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.

ActionWhat it does
# MAILCHECK_MAILCHECK_VERIFY_EMAILVerify 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 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 →
  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 →

Go to the source

Mailcheck in the docs →Mailcheck connection settings →Mailcheck website →Every MCP in the catalog →Usage 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.