MailTester Email Verification for Claude Code

com.mailtester/email-verification

Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.

client:Claude Code transport:streamable-http tools:9

Install MailTester Email Verification in Claude Code

run in your project directory

claude mcp add --transport http email-verification https://app.mailtester.com/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs