Connect Mailcheck to Claude, ChatGPT, Cursor, Claude Code, Codex, Gemini, GitHub Copilot and any other MCP client, for your whole team. Metorial adds security, governance, and tracing, and gives everyone one Magic MCP URL to connect.
Ask your agent in plain language. Each of these maps to a real tool on the server.
Use the get batch operation tool in Mailcheck
Use the list batch operations tool in Mailcheck
Use the verify email tool in Mailcheck
Use the create batch check tool in Mailcheck
Supported Tools
get_batch_operation
Get Batch Operation
Retrieve the status and results of a batch email verification operation. Use the operation name returned by the **Create Batch Check** tool.
When the operation is complete, the results file is available to download.
list_operations
List Batch Operations
List all batch email verification operations for the current account. Returns operation names, statuses, progress, and result download URLs for completed operations.
Supports pagination for accounts with many operations.
verify_email
Verify Email
Verify a single email address for validity and deliverability. Returns a trust score (0–100), MX/SMTP validation results, disposable email detection, and social profile data (Gravatar, GitHub, Facebook) when available.
Emails with a trust rate of **0–49%** are considered risky and most likely invalid. Emails with a trust rate of **50–100%** are considered valid.
create_batch_check
Create Batch Check
Submit a list of email addresses for batch verification. Returns an operation that can be polled for completion using the **Get Batch Operation** tool.
Once the operation completes, use **Get Batch Operation** to retrieve the verification results file.
Enable Mailcheck in Metorial. In your Metorial portal, enable the Mailcheck MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
Add a custom connector. Open Customize, then Connectors. Select Add, then Custom, then Web.
Paste your Metorial MCP URL. Name it Metorial, paste your Magic MCP URL (<your-magic-mcp-url>) and continue.
Sign in. Select Add and sign in to load Mailcheck tools.
Enable Mailcheck in Metorial. In your Metorial portal, enable the Mailcheck MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
Add a custom MCP server. On ChatGPT web, open Plugins, select +, then Add custom MCP server.
Paste your Metorial MCP URL. Name it Metorial, paste your Magic MCP URL (<your-magic-mcp-url>), choose OAuth and accept the risk notice.
Create and install the plugin. Select Create as a plugin, install it and sign in to load Mailcheck tools.
Enable Mailcheck in Metorial. In your Metorial portal, enable the Mailcheck MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
Add Metorial to your MCP config. Use ~/.cursor/mcp.json for every project, or .cursor/mcp.json for one.
Sign in. Open Customize in the sidebar, find Metorial and sign in to load Mailcheck tools.
{
"mcpServers":{
"metorial":{
"url":"<your-magic-mcp-url>"
}
}
}
Enable Mailcheck in Metorial. In your Metorial portal, enable the Mailcheck MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
Add the server over HTTP. Add --scope user to use it in every project.
Sign in. Run /mcp, select Metorial and sign in to load Mailcheck tools.
claude mcp add --transport http metorial <your-magic-mcp-url>
Enable Mailcheck in Metorial. In your Metorial portal, enable the Mailcheck MCP server and sign in with the account that owns the data. Access stays governed by your team policies.
Add the server and sign in. The Codex CLI, IDE extension and ChatGPT desktop app share this config.
Check the connection. Type /mcp in Codex to see Metorial and its Mailcheck tools.
codex mcp add metorial --url <your-magic-mcp-url>
codex mcp login metorial
Run Mailcheck through the Metorial gateway
One governed layer for every app your agents reach, not a separate connector per tool.
Give Mailcheck and every other app to your whole team through one MCP gateway, behind your SSO.
Scope which teams and agents can use Mailcheck tools with role-based access control, and trace every call.
Prefer to run it yourself? Metorial is open source and self-hostable.
Verify and validate email addresses for deliverability and trustworthiness. Check individual addresses with a trust score, submit lists for batch verification, monitor progress, and download completed results. Retrieves validation data from social networks and public sources to score emails beyond simple MX checks.
Frequently asked questions
Common questions about connecting Mailcheck to AI agents with Metorial.
How many tools does the Mailcheck MCP server have?
The Mailcheck MCP server exposes 4 tools, including Get Batch Operation, List Batch Operations, Verify Email. Each one is governed and traced through Metorial.
Does the Mailcheck MCP server support triggers?
Mailcheck exposes tools your agents call on demand; it does not publish event triggers yet. Everything still runs through one governed MCP URL.
Which AI clients can use the Mailcheck MCP server?
Any MCP client, including VS Code, Windsurf, Zed, OpenCode and Grok. Each one reaches the Mailcheck MCP server through the same Metorial URL.
How do I give only some teams access to Mailcheck?
Use role-based access control to decide which teams, users, and agents can use Mailcheck and which of its tools they can call.
Can I self-host the Mailcheck MCP server?
Yes. Metorial is open source, so you can run the Mailcheck MCP server yourself or use the hosted gateway.
Connect Mailcheck to production AI agents
See how Metorial gives your team governed access to Mailcheck, with tracing and security controls built in.