{"slug":"mailtester-ninja-9294a820","name":"MailTester Ninja","summary":"Verify email addresses live against their mail server and find work emails. Nothing stored.","status":"live","indexable":true,"listed_since":"2026-10-28T20:12:33.160886Z","sources":[{"source":"mcp_registry","external_id":"ninja.mailtester/email-verification","owner_address":null,"seen_at":"2026-10-28T20:12:33.160886Z","removed_at":null}],"endpoints":[{"url":"https://mcp.mailtester.ninja/mcp","host":"mcp.mailtester.ninja","protocol":"mcp","state":"live","last_probe_at":"2026-11-09T08:02:24.944374Z","last_ok_at":"2026-11-09T08:02:24.944374Z","tools_count":2,"tools_changed_at":"2026-11-01T21:41:15.141070Z","uptime_24h":1.0,"uptime_30d":1.0},{"url":"https://mailtester.ninja/integrations/mcp/","host":"mailtester.ninja","protocol":"web","state":"live","last_probe_at":"2026-11-09T08:03:22.585584Z","last_ok_at":"2026-11-09T08:03:22.585584Z","tools_count":null,"tools_changed_at":null,"uptime_24h":1.0,"uptime_30d":1.0}],"also_listed_as":[],"payment_options":[],"usage":null,"assessment":{"method":"2026.10.2","checks":[{"id":"answers","state":"pass","reason":"Answered a check 19 hours ago."},{"id":"owner","state":"pass","reason":"Control proven: mailtester.ninja, proven to the MCP Registry."},{"id":"track_record","state":"fail","reason":"Listed for 11 days; 30 are needed."},{"id":"real_customers","state":"not_applicable","reason":"It does not sell over x402."},{"id":"clean_scan","state":"pass","reason":"No hidden instructions or invisible characters in its 2 tools."}],"passed":3,"applicable":4,"contradicted":false,"computed_at":"2026-11-09T00:17:00.637610Z"},"identity":{"endpoint_domains":["mailtester.ninja"],"proven_domains":[{"domain":"mailtester.ninja","proven_by":"mcp_registry","serves_endpoint":true,"as_of":"2026-10-28T20:12:33.160886Z"}],"proven_wallets":[],"namesakes":[],"namesake_count":0,"identity_checks":[],"wallet_attestations":[],"human_backings":[]},"replies":[],"customers":null,"scan":{"endpoint_url":"https://mcp.mailtester.ninja/mcp","tools":2,"high":0,"medium":0,"findings":[],"observed_at":"2026-10-29T07:28:00.716773Z","evidence_id":1003749},"notice":"Not affiliated with addrbook — claim or request removal."}