Use with Claude Desktop, ChatGPT, DeepSeek, Kimi, MiniMax clients, or integrate via Claude Code, OpenCode, Cursor, Windsurf, Gemini CLI. One config line, no SDK needed.
{
"mcpServers": {
"emailverify": {
"command": "curl",
"args": ["--stdio", "https://mcp.emailverify.ai/mcp?api_key=YOUR_KEY"]
}
}
}AI clients, coding assistants, and custom integrations
Claude Desktop, ChatGPT Desktop, DeepSeek, Kimi, MiniMax, Doubao
Claude Code, OpenCode, Cursor, Windsurf, Cline, Continue, Zed
Gemini CLI, Codex CLI, Droid, any MCP-compatible terminal
Anthropic SDK, OpenAI SDK, Vercel AI SDK, LangChain
REST API, HTTP Streamable Transport, JSON-RPC 2.0
Comprehensive validation capabilities for AI agents
Verify single emails in under 2 seconds with full SMTP validation
Validate up to 50 emails at once with concurrent processing
True mailbox verification - not just syntax or DNS checks
Block temporary and throwaway email addresses
Identify support@, info@, noreply@ addresses
7-day cache for valid/invalid emails, instant repeated lookups
The simplest MCP server integration ever
Create your API key from the EmailVerify dashboard
Add one line to your MCP client configuration
Ask your AI agent to verify any email address
Most verification services skip the crucial step that actually works
Syntax and DNS checks only confirm an email looks valid. They cannot tell you if the mailbox actually exists or accepts mail.
Our servers connect directly to mail servers on port 25 to verify mailbox existence. This is the only way to truly confirm email deliverability.
Most cloud providers block port 25. AWS, GCP, Azure, and most VPS providers restrict SMTP access. We operate dedicated infrastructure with whitelisted IPs for accurate verification.
The first and only enterprise-grade email verification for AI agents
No installation needed. Just add one line to your config file. Works with Claude Code, OpenCode, Cursor, Windsurf, and all MCP-compatible tools. curl is pre-installed on macOS, Linux, and Windows.
Run: claude mcp add emailverify -- curl --stdio "https://mcp.emailverify.ai/mcp?api_key=YOUR_KEY". Or add to ~/.claude.json. Then just ask Claude to verify any email.
Yes. Add the same config to ~/.opencode/config.json. OpenCode fully supports MCP servers including EmailVerify for real-time email validation.
Go to Settings > MCP in Cursor or Windsurf, add the emailverify config with curl command. Both editors have native MCP support.
Yes. Any AI client that supports MCP can use EmailVerify. This includes Claude Desktop, ChatGPT Desktop, DeepSeek, Kimi, MiniMax, Doubao and more.
Yes. Use our REST API endpoint or integrate MCP tools programmatically. Works with Anthropic SDK, OpenAI SDK, Vercel AI SDK, and LangChain.
SMTP verification is the only way to confirm a mailbox exists. Syntax and DNS checks miss 20-40% of invalid emails. We operate dedicated infrastructure with port 25 access that cloud providers block.
Yes. Gemini CLI supports MCP protocol. Add the same config and Gemini can verify emails directly in your terminal workflows.
Join thousands of developers using EmailVerify MCP with Claude Code, OpenCode, Gemini CLI and more.