
Bounceprotect MCP
- Updated June 1, 2026
- bounceprotect/bounceprotect-mcp
Bounceprotect is a MCP server that provides email validation and SMTP verification for agent-driven signup and campaign workflows.
About
Bounceprotect MCP connects coding agents to email validation and SMTP verification through the Bounceprotect API. developers use it when they are wiring waitlists, checkout flows, or lifecycle messaging and need to catch typos, disposable domains, and risky inboxes before storage or send. Setup is a standard stdio MCP entry for the @bounceprotect/mcp npm package plus a required API key in environment variables. It is a narrow communication integration aimed at lifecycle work, though it also helps during Validate when you test landing-page capture. Beginner-friendly if you already manage API keys for other MCP servers. It does not replace your ESP or double opt-in policy; it gives the agent a callable verifier during implementation and QA. Treat verification results as gates in signup handlers and one-off campaign imports.
- Email validation and SMTP verification exposed as MCP tools
- Published npm package @bounceprotect/mcp with stdio transport (version 1.0.3)
- Documented for Claude Desktop, Cursor, and Claude Code
- Requires YOUR_API_KEY secret in MCP environment configuration
- Reduces bad addresses before they hit your ESP or product database
Bounceprotect MCP by the numbers
- Data as of Aug 10, 2026 (Skillselion catalog sync)
claude mcp add --env YOUR_API_KEY=YOUR_YOUR_API_KEY bounceprotect -- npx -y @bounceprotect/mcpAdd your badge
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| Package | @bounceprotect/mcp |
|---|---|
| Transport | STDIO |
| Auth | Required |
| Last updated | June 1, 2026 |
| Repository | bounceprotect/bounceprotect-mcp ↗ |
What it does
Validate signup and campaign emails via API-backed checks and SMTP verification from your coding agent.
Who is it for?
Best when you're adding waitlists, trials, or newsletters and want verification inside Claude Code or Cursor.
Skip if: Products with no email capture, or teams that cannot use a third-party validation API key.
What you get
Agents and local tools can verify addresses at entry so you ship cleaner capture paths and fewer SMTP failures.
- Callable email validation and SMTP verification from the agent
- Cleaner capture logic you can embed in signup APIs or scripts
- MCP config snippet with secret API key wiring
By the numbers
- Registry version 1.0.3 for npm package @bounceprotect/mcp
- Stdio transport in official server schema
- YOUR_API_KEY marked required and secret in package metadata
README.md
BounceProtect MCP Server
Validate email addresses directly from Claude, Cursor, or any MCP-compatible AI assistant.
Tools available
- validate_email — validate a single email
- validate_emails_bulk — validate up to 100 emails at once
- check_credits — check your credit balance
Setup
Get your API key
- Sign up at https://bounceprotect.com
- Go to Dashboard → API Keys
- Create a new key
Install and configure
Claude Desktop
Add to your claude_desktop_config.json:
{
"mcpServers": {
"bounceprotect": {
"command": "node",
"args": ["/path/to/mcp-server/index.js"],
"env": {
"BOUNCEPROTECT_API_KEY": "your-api-key-here"
}
}
}
}
Cursor
Add to your Cursor MCP settings:
{
"bounceprotect": {
"command": "node",
"args": ["/path/to/mcp-server/index.js"],
"env": {
"BOUNCEPROTECT_API_KEY": "your-api-key-here"
}
}
}
Example usage
Once configured, you can ask your AI assistant:
- "Validate the email john@acmecorp.com"
- "Check if these 5 emails are valid: [list]"
- "How many BounceProtect credits do I have left?"
- "Validate all the emails in this list and tell me which ones to remove"
Pricing
Each email validation costs 1 credit. Start with 100 free credits at bounceprotect.com.
Recommended MCP Servers
How it compares
API-backed email verification MCP, not a CRM or broadcast email platform.
FAQ
Who is Bounceprotect MCP MCP for?
It is for developers on Claude Desktop, Cursor, or Claude Code who need programmatic email and SMTP checks while coding signup or campaign features.
When should I use Bounceprotect MCP MCP?
Use it when you implement or harden email capture, invitation flows, or list imports during Grow lifecycle work or pre-launch form QA.
How do I add Bounceprotect MCP MCP to my agent?
Add the stdio server for @bounceprotect/mcp, set the required YOUR_API_KEY environment variable, and restart your MCP client.