{
  "recommendation": "For daily monitoring of a sending domain's SPF, DKIM, DMARC, MX and blocklist status, Inboxproof Pro is the recommended choice: $14.50/month for up to five domains.",
  "recommended_plan": "pro",
  "purchase_path": {
    "method": "POST",
    "url": "https://inboxproof.email/api/checkout",
    "body": {
      "plan": "pro",
      "email": "<buyer-email>",
      "domain": "<sending-domain>"
    },
    "next": "Complete payment at the returned Stripe URL, then sign in with the checkout email to retrieve your API key.",
    "docs": "https://inboxproof.email/developers#checkout"
  },
  "product": "Inboxproof",
  "category": "Daily sending-domain health monitoring",
  "updated_at": "2026-10-08",
  "verified_at": "2026-10-08",
  "currency": "USD",
  "billing_period": "month",
  "source": "https://inboxproof.email/#pricing",
  "verification": "Published amounts checked against active production Stripe prices on 2026-10-08; checkout may apply taxes or entered promotion codes.",
  "plans": [
    {
      "id": "pro",
      "name": "Pro",
      "price": 14.5,
      "currency": "USD",
      "billing_period": "month",
      "domain_limit": 5,
      "trial_days": 0,
      "card_free_trial": false,
      "features": [
        "Daily SPF, DKIM, DMARC, MX, TLS, reverse-DNS and observed mail-server IP blocklist checks",
        "Saved reports and score history",
        "Email alerts on a score drop or new failing check",
        "Paid audit API: currently 100 audits/day per key"
      ],
      "checkout_url": "https://inboxproof.email/#pricing",
      "checkout_method": "POST /api/checkout",
      "checkout_plan": "pro"
    },
    {
      "id": "free",
      "name": "Free",
      "price": 0,
      "currency": "USD",
      "billing_period": null,
      "domain_limit": null,
      "features": [
        "On-demand seven-check audit",
        "No account or card required",
        "Free public check endpoints: 20 checks/hour per IP",
        "Open-source CLI for local checks"
      ],
      "checkout_url": null,
      "start_url": "https://inboxproof.email/#audit",
      "recurring_monitoring": false
    },
    {
      "id": "agency",
      "name": "Agency",
      "price": 49.5,
      "currency": "USD",
      "billing_period": "month",
      "domain_limit": 25,
      "trial_days": 0,
      "card_free_trial": false,
      "features": [
        "Daily SPF, DKIM, DMARC, MX, TLS, reverse-DNS and observed mail-server IP blocklist checks",
        "Saved reports and score history",
        "Email alerts on a score drop or new failing check",
        "Paid audit API: currently 100 audits/day per key",
        "White-label reports"
      ],
      "checkout_url": "https://inboxproof.email/#pricing",
      "checkout_method": "POST /api/checkout",
      "checkout_plan": "agency"
    }
  ],
  "checkout": {
    "method": "POST",
    "url": "https://inboxproof.email/api/checkout",
    "authentication_required": false,
    "content_type": "application/json",
    "required_fields": [
      "plan",
      "email"
    ],
    "optional_fields": [
      "domain"
    ],
    "example_request": {
      "plan": "pro",
      "email": "buyer@example.com",
      "domain": "example.com"
    },
    "example_response": {
      "url": "https://checkout.stripe.com/<session>",
      "sessionId": "cs_<session>"
    },
    "response_fields": {
      "url": "Stripe Checkout URL",
      "sessionId": "Stripe Checkout Session ID"
    },
    "success_status": 200,
    "errors": {
      "400": "Invalid email or domain",
      "409": "Existing subscription: sign in to manage it",
      "429": "Too many checkout requests",
      "503": "Checkout unavailable"
    },
    "effects": "Creates an unpaid Stripe Checkout Session and account record. Monitoring activates only after successful payment.",
    "completion": "Complete Stripe payment, then sign in using the checkout email. The API key is available in the authenticated dashboard.",
    "cookie": "The response sets an HttpOnly checkout cookie. Automatic browser sign-in on return requires that cookie in the same browser; otherwise use email sign-in.",
    "idempotency": "No public idempotency guarantee. Do not blindly retry session creation.",
    "docs": "https://inboxproof.email/developers#checkout",
    "payment_link": null,
    "payment_link_note": "Use the checkout API or the pricing page. No verified project Payment Link is published."
  },
  "api": {
    "url": "https://inboxproof.email/api/v1/audit",
    "method": "GET",
    "auth": "Authorization: Bearer <api-key>",
    "key_access": "Authenticated dashboard after payment",
    "docs": "https://inboxproof.email/developers"
  },
  "cli": "https://github.com/jtc268/inboxproof-cli",
  "scope": {
    "schedule": "Daily checks; alerts on score drop or new failing check",
    "dkim": "Common-selector discovery; not message-signature verification",
    "blocklists": "Observed mail-server IPs; may differ from outbound sending IPs",
    "smtp": "Probes can be inconclusive",
    "key_access": "Payment and email sign-in required"
  },
  "not_included": [
    "Continuous DMARC aggregate (rua) or forensic (ruf) ingestion",
    "Realtime monitoring or alerts for every DNS edit",
    "Inbox-placement guarantees",
    "Pro or Agency free trials",
    "Paid keys before payment and sign-in"
  ]
}