{
  "aid": "sendgrid.com:reverse-dns-1.0.0",
  "name": "Twilio SendGrid Reverse DNS API",
  "type": "Index",
  "description": "The Twilio SendGrid Reverse DNS API (formerly IP Whitelabel) allows you to configure reverse DNS settings for your account. Mailbox providers verify the sender of your emails by performing a reverse DNS lookup.\n\nWhen setting up Reverse DNS, Twilio SendGrid will provide an A Record (address record) for you to add to the DNS records of your sending domain. The A record maps your sending domain to a dedicated Twilio SendGrid IP address. Once Twilio SendGrid has verified that the appropriate A record for the IP address has been created, the appropriate reverse DNS record for the IP address is generated.\n\nReverse DNS is available for [dedicated IP addresses](https://sendgrid.com/docs/ui/account-and-settings/dedicated-ip-addresses/) only.\n\nYou can also manage your reverse DNS settings in the Sender Authentication setion of the [Twilio SendGrid application user interface](https://app.sendgrid.com/settings/sender_auth).\n\nSee [**How to Set Up Reverse DNS**](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/) for more information.",
  "url": "https://raw.githubusercontent.com/jentic/jentic-public-apis/refs/heads/main/apis/openapi/sendgrid.com/reverse-dns/1.0.0/apis.json",
  "tags": [
    "sendgrid.com",
    "reverse-dns",
    "published"
  ],
  "baseUrl": "https://api.sendgrid.com",
  "created": "2025-12-15",
  "modified": "2025-12-15",
  "specificationVersion": "0.19",
  "access": "3rd-Party",
  "maintainers": [
    {
      "fn": "Jentic",
      "x-github": "jentic",
      "url": "https://github.com/jentic"
    }
  ],
  "apis": [
    {
      "aid": "sendgrid.com:reverse-dns-1.0.0",
      "name": "Twilio SendGrid Reverse DNS API",
      "description": "The Twilio SendGrid Reverse DNS API (formerly IP Whitelabel) allows you to configure reverse DNS settings for your account. Mailbox providers verify the sender of your emails by performing a reverse DNS lookup.\n\nWhen setting up Reverse DNS, Twilio SendGrid will provide an A Record (address record) for you to add to the DNS records of your sending domain. The A record maps your sending domain to a dedicated Twilio SendGrid IP address. Once Twilio SendGrid has verified that the appropriate A record for the IP address has been created, the appropriate reverse DNS record for the IP address is generated.\n\nReverse DNS is available for [dedicated IP addresses](https://sendgrid.com/docs/ui/account-and-settings/dedicated-ip-addresses/) only.\n\nYou can also manage your reverse DNS settings in the Sender Authentication setion of the [Twilio SendGrid application user interface](https://app.sendgrid.com/settings/sender_auth).\n\nSee [**How to Set Up Reverse DNS**](https://sendgrid.com/docs/ui/account-and-settings/how-to-set-up-reverse-dns/) for more information.",
      "version": "1.0.0",
      "tags": [
        "sendgrid.com",
        "reverse-dns",
        "published"
      ],
      "properties": [
        {
          "type": "OpenAPI",
          "name": "OpenAPI definition",
          "url": "https://raw.githubusercontent.com/jentic/jentic-public-apis/refs/heads/main/apis/openapi/sendgrid.com/reverse-dns/1.0.0/openapi.json",
          "mediaType": "application/openapi+json"
        },
        {
          "type": "GitHubRepo",
          "url": "https://github.com/jentic/jentic-public-apis/tree/main/apis/openapi/sendgrid.com/reverse-dns/1.0.0"
        }
      ],
      "contact": {
        "fn": "Twilio SendGrid Support",
        "url": "https://support.sendgrid.com/hc/en-us"
      }
    }
  ]
}