{"id":"com-mailtester-email-verification","name":"com.mailtester/email-verification","title":"MailTester Email Verification","description":"Verify emails (valid/invalid/risky/unknown): MX, SMTP, catch-all, disposable. Free agent key.","category":"communication","categories":["communication","agents-and-memory"],"flags":[],"users_30d":0,"health":{"status":"ok","latency_ms":3698,"tool_count":9,"auth":"none","checked_at":"2026-10-14T20:25:48.306Z"},"remote":true,"pending":false,"install_link":"https://toolfindr.dev/add?server=com.mailtester%2Femail-verification&ref=tool-finder","details_url":"https://toolfindr.dev/servers/com-mailtester-email-verification","health_error":null,"repo_url":"https://github.com/mailtester-com/mailtester-mcp","website_url":"https://app.mailtester.com/agent-gateway","version":"1.0.1","remotes":[{"type":"streamable-http","url":"https://app.mailtester.com/mcp","headers":[{"description":"Bearer <api_key>. Get a free key (25 verifications/day) with the get_api_key tool or POST https://app.mailtester.com/agent-gateway/register","isSecret":true,"name":"Authorization"}]}]}