{
  "company": {
    "name": "Knock",
    "website": "https://knock.app/",
    "record": "https://startuphistory.org/c/knock.app"
  },
  "status": null,
  "history_since": "2021-04-06T16:20:11.000Z",
  "baseline": {
    "snapshot_id": "e6b1de57d67aed77eac4c5e5fb54f37265ae98c749a6a3b39639920bc3a9efa1",
    "observed_at": "2021-04-06T16:20:11.000Z",
    "headline": "The easiest way to send product notifications",
    "description": "Knock is a hosted API for turning user activity into product notifications.",
    "evidence": "https://web.archive.org/web/20210406162011/https://knock.app/",
    "evidence_kind": "internet_archive",
    "facts": null,
    "basis": "first_observation",
    "is_change": false
  },
  "live_captures": 1,
  "last_checked": "2026-11-06T17:30:57.361Z",
  "live_status": null,
  "messaging": [
    {
      "quote_observed_at": "2021-09-16T10:36:31.000Z",
      "variants": [
        {
          "headline": "The easiest way to send product notifications",
          "subhead": "Knock is a hosted API for turning user activity into product notifications.",
          "observed_at": "2021-04-06T16:20:11.000Z",
          "evidence": "https://web.archive.org/web/20210406162011/https://knock.app/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "The easiest way to send product notifications",
          "subhead": "Knock is a hosted API for turning user activity into product notifications.",
          "observed_at": "2021-09-16T10:36:31.000Z",
          "evidence": "https://web.archive.org/web/20210916103631/https://knock.app/",
          "evidence_kind": "internet_archive"
        }
      ],
      "headline": "The easiest way to send product notifications",
      "subhead": "Knock is a hosted API for turning user activity into product notifications.",
      "from": "2021-04-06T16:20:11.000Z",
      "to": "2021-09-16T10:36:31.000Z",
      "captures": 2,
      "evidence": "https://web.archive.org/web/20210916103631/https://knock.app/",
      "evidence_kind": "internet_archive",
      "seen": {
        "between": {
          "from": "2021-04-06T16:20:11.000Z",
          "to": "2021-09-16T10:36:31.000Z"
        }
      },
      "current": false
    },
    {
      "quote_observed_at": "2022-01-16T23:04:33.000Z",
      "variants": [
        {
          "headline": "Notifications infrastructure for developers",
          "subhead": "Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.",
          "observed_at": "2022-01-16T23:04:33.000Z",
          "evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
          "evidence_kind": "internet_archive"
        }
      ],
      "headline": "Notifications infrastructure for developers",
      "subhead": "Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.",
      "from": "2022-01-16T23:04:33.000Z",
      "to": "2022-01-16T23:04:33.000Z",
      "captures": 1,
      "evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
      "evidence_kind": "internet_archive",
      "seen": {
        "on": "2022-01-16T23:04:33.000Z"
      },
      "current": false
    },
    {
      "quote_observed_at": "2024-07-14T02:44:38.000Z",
      "variants": [
        {
          "headline": "The most powerful notification system you'll never build.",
          "subhead": "Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.",
          "observed_at": "2023-01-06T20:21:32.000Z",
          "evidence": "https://web.archive.org/web/20230106202132/https://knock.app/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "The most powerful notification system you'll never build.",
          "subhead": "Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.",
          "observed_at": "2023-09-29T13:44:22.000Z",
          "evidence": "https://web.archive.org/web/20230929134422/https://knock.app/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "The most powerful notification system you'll never build.",
          "subhead": "Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.",
          "observed_at": "2024-01-03T07:50:20.000Z",
          "evidence": "https://web.archive.org/web/20240103075020/https://knock.app/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "The most powerful notification system you'll never build.",
          "subhead": "Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.",
          "observed_at": "2024-07-14T02:44:38.000Z",
          "evidence": "https://web.archive.org/web/20240714024438/https://knock.app/",
          "evidence_kind": "internet_archive"
        }
      ],
      "headline": "The most powerful notification system you'll never build.",
      "subhead": "Knock is flexible, reliable notifications infrastructure that's built to scale with you. Use our APIs to engage your users, power cross-channel workflows, and manage notification preferences.",
      "from": "2023-01-06T20:21:32.000Z",
      "to": "2024-07-14T02:44:38.000Z",
      "captures": 4,
      "evidence": "https://web.archive.org/web/20240714024438/https://knock.app/",
      "evidence_kind": "internet_archive",
      "seen": {
        "between": {
          "from": "2023-01-06T20:21:32.000Z",
          "to": "2024-07-14T02:44:38.000Z"
        }
      },
      "current": false
    },
    {
      "quote_observed_at": "2026-07-12T14:59:50.000Z",
      "variants": [
        {
          "headline": "Knock is infrastructure for sending product and customer messaging.",
          "subhead": "Knock is infrastructure for sending product and customer messaging. Ship cross-channel product notifications and lifecycle messaging that drives engagement, growth, and retention.",
          "observed_at": "2025-07-03T17:32:08.000Z",
          "evidence": "https://web.archive.org/web/20250703173208/https://knock.app/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "Customer engagement infrastructure for product-led growth.",
          "subhead": "Knock is customer engagement infrastructure for your product, marketing, and transactional messaging. Activate your data, ship cross-channel messaging, and accelerate growth.",
          "observed_at": "2026-01-13T05:50:17.000Z",
          "evidence": "https://web.archive.org/web/20260113055017/https://knock.app/",
          "evidence_kind": "internet_archive"
        },
        {
          "headline": "Agent-led customer engagement for compounding growth.",
          "subhead": "Knock is customer engagement infrastructure for your product, marketing, and transactional messaging. Activate your data, ship cross-channel messaging, and accelerate growth.",
          "observed_at": "2026-07-12T14:59:50.000Z",
          "evidence": "https://web.archive.org/web/20260712145950/https://knock.app/",
          "evidence_kind": "internet_archive"
        }
      ],
      "headline": "Agent-led customer engagement for compounding growth.",
      "subhead": "Knock is customer engagement infrastructure for your product, marketing, and transactional messaging. Activate your data, ship cross-channel messaging, and accelerate growth.",
      "from": "2025-07-03T17:32:08.000Z",
      "to": "2026-07-12T14:59:50.000Z",
      "captures": 3,
      "evidence": "https://web.archive.org/web/20260712145950/https://knock.app/",
      "evidence_kind": "internet_archive",
      "seen": {
        "between": {
          "from": "2025-07-03T17:32:08.000Z",
          "to": "2026-07-12T14:59:50.000Z"
        }
      },
      "current": false
    },
    {
      "quote_observed_at": "2026-11-06T17:30:57.361Z",
      "variants": [
        {
          "headline": "Agentic customer engagement to grow faster",
          "subhead": "Knock is agentic customer engagement infrastructure to grow faster. Ship cross-channel lifecycle and transactional messaging from your favorite agent.",
          "observed_at": "2026-11-06T17:30:57.361Z",
          "evidence": "https://knock.app/",
          "evidence_kind": "live_capture"
        }
      ],
      "headline": "Agentic customer engagement to grow faster",
      "subhead": "Knock is agentic customer engagement infrastructure to grow faster. Ship cross-channel lifecycle and transactional messaging from your favorite agent.",
      "from": "2026-11-06T17:30:57.361Z",
      "to": "2026-11-06T17:30:57.361Z",
      "captures": 1,
      "evidence": "https://knock.app/",
      "evidence_kind": "live_capture",
      "seen": {
        "on": "2026-11-06T17:30:57.361Z"
      },
      "current": true
    }
  ],
  "changes": [
    {
      "n": 1,
      "id": "page-3d40926139f4fc11dcb1454c08ba1fafda3f117eeb350d0a0ffd033a7049be9d:fca81e496d06897feb8f373ea0930ad5b7e9cbc5ba26c0f58d9b59c91296e619:headline:f8aff92e310c10e3",
      "before_evidence": "https://web.archive.org/web/20210916103631/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "headline",
      "label": "Headline",
      "summary": "Changed its homepage headline from “The easiest way to send product notifications” to “Notifications infrastructure for developers”.",
      "between": {
        "from": "2021-09-16T10:36:31.000Z",
        "to": "2022-01-16T23:04:33.000Z"
      },
      "evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": null
    },
    {
      "n": 2,
      "id": "page-3d40926139f4fc11dcb1454c08ba1fafda3f117eeb350d0a0ffd033a7049be9d:fca81e496d06897feb8f373ea0930ad5b7e9cbc5ba26c0f58d9b59c91296e619:pricing:ef162f2c55d8c41b",
      "before_evidence": "https://web.archive.org/web/20210916103631/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "pricing",
      "label": "Pricing",
      "summary": "Added a pricing page.",
      "between": {
        "from": "2021-09-16T10:36:31.000Z",
        "to": "2022-01-16T23:04:33.000Z"
      },
      "evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/added-pricing-page"
    },
    {
      "n": 3,
      "id": "page-fca81e496d06897feb8f373ea0930ad5b7e9cbc5ba26c0f58d9b59c91296e619:db6b708c320562097d30cb773e0f73802edd1f6f0beb4f5475545444a9f0f539:headline:e615340caec1c763",
      "before_evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "headline",
      "label": "Headline",
      "summary": "Changed its homepage headline from “Notifications infrastructure for developers” to “The most powerful notification system you'll never build.”.",
      "between": {
        "from": "2022-01-16T23:04:33.000Z",
        "to": "2023-01-06T20:21:32.000Z"
      },
      "evidence": "https://web.archive.org/web/20230106202132/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": null
    },
    {
      "n": 4,
      "id": "page-fca81e496d06897feb8f373ea0930ad5b7e9cbc5ba26c0f58d9b59c91296e619:db6b708c320562097d30cb773e0f73802edd1f6f0beb4f5475545444a9f0f539:gtm:71fb5032b8ee999a",
      "before_evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "gtm",
      "label": "Go-to-market",
      "summary": "Closed its waitlist and opened sign-up.",
      "between": {
        "from": "2022-01-16T23:04:33.000Z",
        "to": "2023-01-06T20:21:32.000Z"
      },
      "evidence": "https://web.archive.org/web/20230106202132/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/opened-sign-up"
    },
    {
      "n": 5,
      "id": "page-fca81e496d06897feb8f373ea0930ad5b7e9cbc5ba26c0f58d9b59c91296e619:db6b708c320562097d30cb773e0f73802edd1f6f0beb4f5475545444a9f0f539:gtm:74f755ba679ab708",
      "before_evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "gtm",
      "label": "Go-to-market",
      "summary": "Added a free sign-up or free trial.",
      "between": {
        "from": "2022-01-16T23:04:33.000Z",
        "to": "2023-01-06T20:21:32.000Z"
      },
      "evidence": "https://web.archive.org/web/20230106202132/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/added-free-trial"
    },
    {
      "n": 6,
      "id": "page-fca81e496d06897feb8f373ea0930ad5b7e9cbc5ba26c0f58d9b59c91296e619:db6b708c320562097d30cb773e0f73802edd1f6f0beb4f5475545444a9f0f539:compliance:28c8f13d81f29562",
      "before_evidence": "https://web.archive.org/web/20220116230433/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "compliance",
      "label": "Compliance",
      "summary": "Now states SOC 2 compliance on its homepage.",
      "between": {
        "from": "2022-01-16T23:04:33.000Z",
        "to": "2023-01-06T20:21:32.000Z"
      },
      "evidence": "https://web.archive.org/web/20230106202132/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/added-soc-2"
    },
    {
      "n": 7,
      "id": "page-db6b708c320562097d30cb773e0f73802edd1f6f0beb4f5475545444a9f0f539:22bf48610e19c129bf86e4b3f4f51360d9b61014c92869f2a12bb5975a2f6d3a:compliance:55948c98099e52d0",
      "before_evidence": "https://web.archive.org/web/20230106202132/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "compliance",
      "label": "Compliance",
      "summary": "Now states HIPAA compliance on its homepage.",
      "between": {
        "from": "2023-01-06T20:21:32.000Z",
        "to": "2023-09-29T13:44:22.000Z"
      },
      "evidence": "https://web.archive.org/web/20230929134422/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/added-hipaa"
    },
    {
      "n": 8,
      "id": "page-22bf48610e19c129bf86e4b3f4f51360d9b61014c92869f2a12bb5975a2f6d3a:026ba11c49d63caa773f958288071a55e1787abce8d944d19b540d00efd808d9:hiring:70bbbe3680f59b6f",
      "before_evidence": "https://web.archive.org/web/20230929134422/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "hiring",
      "label": "Hiring",
      "summary": "Opened a job board on Ashby.",
      "between": {
        "from": "2023-09-29T13:44:22.000Z",
        "to": "2024-01-03T07:50:20.000Z"
      },
      "evidence": "https://web.archive.org/web/20240103075020/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/added-careers-page"
    },
    {
      "n": 9,
      "id": "page-0083bf84e4247fd70aab5f930b0ad8e26fbfa72d5a28cd1cbffb671e03135c13:67247443e65d07ed3a9fbb26df80a1ea48214efb85ee487653ce7427cc341257:headline:6fa3abe08b6d765d",
      "before_evidence": "https://web.archive.org/web/20240714024438/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "headline",
      "label": "Headline",
      "summary": "Changed its homepage headline from “The most powerful notification system you'll never build.” to “Knock is infrastructure for sending product and customer messaging.”.",
      "between": {
        "from": "2024-07-14T02:44:38.000Z",
        "to": "2025-07-03T17:32:08.000Z"
      },
      "evidence": "https://web.archive.org/web/20250703173208/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": null
    },
    {
      "n": 10,
      "id": "page-0083bf84e4247fd70aab5f930b0ad8e26fbfa72d5a28cd1cbffb671e03135c13:67247443e65d07ed3a9fbb26df80a1ea48214efb85ee487653ce7427cc341257:gtm:38f0fe27a40f24c1",
      "before_evidence": "https://web.archive.org/web/20240714024438/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "gtm",
      "label": "Go-to-market",
      "summary": "Dropped its free sign-up; visitors are now asked to book a demo.",
      "between": {
        "from": "2024-07-14T02:44:38.000Z",
        "to": "2025-07-03T17:32:08.000Z"
      },
      "evidence": "https://web.archive.org/web/20250703173208/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/switched-to-sales-led"
    },
    {
      "n": 11,
      "id": "page-9c2eeb8e68e71682d5d4aa2c5638426da303c14d397c69febe51f49d52e3ae7f:c7fd056bd1eaf066b503ee3f7643554ab461622e5690b7aaf943295d9c9342be:hiring:70bbbe3680f59b6f",
      "before_evidence": "https://web.archive.org/web/20260113055017/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "hiring",
      "label": "Hiring",
      "summary": "Opened a job board on Ashby.",
      "between": {
        "from": "2026-01-13T05:50:17.000Z",
        "to": "2026-07-12T14:59:50.000Z"
      },
      "evidence": "https://web.archive.org/web/20260712145950/https://knock.app/",
      "evidence_kind": "internet_archive",
      "basis": "page_facts",
      "topic": "https://startuphistory.org/t/added-careers-page"
    },
    {
      "n": 12,
      "id": "page-c7fd056bd1eaf066b503ee3f7643554ab461622e5690b7aaf943295d9c9342be:908294eee858ee584d4a982cd6dd71e4803ba0abf6e2dbb1f95ea4c862f30f3e:headline:d4a9dc62af854d79",
      "before_evidence": "https://web.archive.org/web/20260712145950/https://knock.app/",
      "before_evidence_kind": "internet_archive",
      "kind": "headline",
      "label": "Headline",
      "summary": "Changed its homepage headline from “Agent-led customer engagement for compounding growth.” to “Agentic customer engagement to grow faster”.",
      "between": {
        "from": "2026-07-12T14:59:50.000Z",
        "to": "2026-11-06T17:30:57.361Z"
      },
      "evidence": "https://knock.app/",
      "evidence_kind": "live_capture",
      "basis": "page_facts",
      "topic": null
    }
  ],
  "update": null,
  "method": {
    "version": "messaging-v1",
    "description": "https://startuphistory.org/method"
  },
  "license": "CC-BY-4.0",
  "cite": "StartupHistory, “Knock” company record, https://startuphistory.org/c/knock.app"
}