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LangChain

MailTester Ninja for LangChain

ninja.mailtester/email-verification

Verify email addresses live against their mail server and find work emails. Nothing stored.

client:LangChain transport:streamable-http tools:2

Install MailTester Ninja in LangChain

pip install langchain-mcp-adapters

from langchain_mcp_adapters.client import MultiServerMCPClient

client = MultiServerMCPClient({
        "email-verification": {
            "transport": "streamable_http",
            "url": "https://mcp.mailtester.ninja/mcp",
        }
})

tools = await client.get_tools()

get_tools() returns the server's tools as LangChain tools, ready for an agent. LangChain docs

What LangChain can do once it is connected

MailTester Ninja in other clients