{
  "name": "Google reputation refusals by estate, top-level domain and client",
  "page": "https://warminboxes.com/research/google-sender-reputation",
  "fieldwork": "30 days to 8 October 2026",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "WarmInboxes.com",
  "generated": "2026-11-11",
  "published": "10 October 2026",
  "notes": [
    "The signal is Google's permanent 550 5.7.1 refusal naming \"very low reputation of the sending domain\".",
    "Rates are refusals as a share of sends; a domain needs 50 sends to carry a rate.",
    "blind = true where the estate cannot surface this verdict at all, so its zero means no visibility, not no refusals.",
    "No client, vendor or sending platform is named; clients are lettered."
  ],
  "fleet": {
    "sends": 3415449,
    "refusals": 6061,
    "domains": 3493,
    "burnedDomains": 127,
    "aboveRetirementLine": 51
  },
  "bounces": [
    {
      "cause": "Ordinary bounces — bad address, full mailbox",
      "count": 27786
    },
    {
      "cause": "Recipient-side gateway spam blocks",
      "count": 14097
    },
    {
      "cause": "Google reputation refusals",
      "count": 6061
    }
  ],
  "estates": [
    {
      "estate": "Azure, estate A",
      "owned": true,
      "sends": 1640757,
      "refusals": 4693,
      "blind": false,
      "refusal_rate_pct": 0.286
    },
    {
      "estate": "Azure, aged estate",
      "owned": true,
      "sends": 579788,
      "refusals": 1332,
      "blind": false,
      "refusal_rate_pct": 0.2297
    },
    {
      "estate": "Google, estate A",
      "owned": true,
      "sends": 43364,
      "refusals": 21,
      "blind": false,
      "refusal_rate_pct": 0.0484
    },
    {
      "estate": "Google, estate B",
      "owned": true,
      "sends": 172074,
      "refusals": 16,
      "blind": false,
      "refusal_rate_pct": 0.0093
    },
    {
      "estate": "Google, bought-in reseller stock",
      "owned": false,
      "sends": 721109,
      "refusals": 0,
      "blind": true,
      "refusal_rate_pct": null
    },
    {
      "estate": "Third-party SMTP",
      "owned": false,
      "sends": 258467,
      "refusals": 0,
      "blind": true,
      "refusal_rate_pct": null
    }
  ],
  "tlds": [
    {
      "tld": ".link",
      "sends": 197451,
      "refusals": 2619,
      "blind": false,
      "refusal_rate_pct": 1.3264
    },
    {
      "tld": ".org",
      "sends": 848956,
      "refusals": 1497,
      "blind": false,
      "refusal_rate_pct": 0.1763
    },
    {
      "tld": ".co",
      "sends": 528352,
      "refusals": 775,
      "blind": false,
      "refusal_rate_pct": 0.1467
    },
    {
      "tld": ".com",
      "sends": 1400294,
      "refusals": 1171,
      "blind": false,
      "refusal_rate_pct": 0.0836
    },
    {
      "tld": ".info",
      "sends": 428996,
      "refusals": 0,
      "blind": true,
      "refusal_rate_pct": null
    }
  ],
  "clients": [
    {
      "client": "Client D",
      "sends": 23426,
      "refusals": 192,
      "refusal_rate_pct": 0.8196
    },
    {
      "client": "Client E",
      "sends": 20237,
      "refusals": 164,
      "refusal_rate_pct": 0.8104
    },
    {
      "client": "Client F",
      "sends": 9575,
      "refusals": 76,
      "refusal_rate_pct": 0.7937
    },
    {
      "client": "Client G",
      "sends": 81871,
      "refusals": 538,
      "refusal_rate_pct": 0.6571
    },
    {
      "client": "Client A",
      "sends": 427001,
      "refusals": 1544,
      "refusal_rate_pct": 0.3616
    }
  ],
  "client_by_tld_refusal_rate_pct": [
    {
      "client": "Client A",
      "com": 0.0007,
      "co": 0.0484,
      "org": 0.3795,
      "link": 2.912
    },
    {
      "client": "Client B",
      "com": 0.0003,
      "co": 0.0098,
      "org": 0.0773,
      "link": 0
    },
    {
      "client": "Client C",
      "com": 0.073,
      "co": 0.007,
      "org": 1.0952,
      "link": null
    }
  ]
}