{"entry":{"slug":"email-spam-tester-api","name":"Email Spam Tester","category":"api","summary":"Send a test message and get a spam score, 41 checks with RFC citations and a fix plan.","description":"","auth_mode":"None — open endpoint","endpoint":"https://email-spam-tester.com/api-docs/","docs_url":"https://email-spam-tester.com/api-docs/","tags":["email"],"capabilities":["email api","email validation","send","test","message","spam","score","checks"],"auth_params":[],"input_format":"application/json","output_format":"application/json","rate_limit":"Provider defined","pricing":"Free or free tier","invocation_example":"","verified":false,"verified_at":null,"featured":false,"checks_total":54,"checks_ok":54,"avg_latency_ms":99,"reports_count":0,"health_ok":true,"health_status_code":200,"health_checked_at":"2026-11-05T22:17:20.861+00:00","health_latency_ms":67,"probe_url":null},"watch":{"hint":"Follow \"email-spam-tester-api\": get alerted when it goes down, comes back, or changes shape. Free, 3 tools per key. Email follows are confirmed by a one-click email before alerts start.","how":"POST https://agentnexus.app/api/public/watch with {\"slug\":\"email-spam-tester-api\"} and your x-api-key (the key's email gets the alerts), or add \"email\" / \"webhook_url\". Email follows must be confirmed from the inbox before alerts start."}}