# Twilio SendGrid Domain Authentication API API

> Twilio SendGrid Domain Authentication API API on Apizie: 16 endpoints (Email DNS records to a co-worker, List all authenticated domains, Authenticate a domain, Retrieve an authenticated domain, …) returned as clean JSON through one API key. Send your own provider key in the x-upstream-key header. Call it over REST at https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/{endpoint} or from Claude, ChatGPT and Cursor through the Apizie MCP server. Free plan: 1,000 requests a month.

- Project key: `communication:sendgrid-domain-authentication-v3`
- Category: Communication
- Status: byok
- Source: https://www.twilio.com/docs/sendgrid/api-reference
- Page: https://apizie.tech/api/communication/sendgrid-domain-authentication-v3
- OpenAPI: https://apizie.tech/api/communication/sendgrid-domain-authentication-v3/openapi.json

The Twilio SendGrid Domain Authentication API allows you to manage your authenticated domains and their settings. Domain Authentication is a required step when setting up your Twilio SendGrid account because it's…

## Endpoints

### Email DNS records to a co-worker
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/email-dns-record` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| body | object | no | JSON request body |

### List all authenticated domains
`GET https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/list-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| limit | integer | no | `limit` sets the page size, i.e. maximum number of items from the list to be returned for a single API request. If omitted, the default… |
| offset | integer | no | The number of items in the list to skip over before starting to retrieve the items for the requested page. The default `offset` of `0`… |
| exclude_subusers | boolean | no | Exclude subuser domains from the result. |
| username | string | no | The username associated with an authenticated domain. |
| domain | string | no | Search for authenticated domains. |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |

### Authenticate a domain
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/authenticate-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |
| body | object | no | JSON request body |

### Retrieve an authenticated domain
`GET https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/get-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| domain_id | string | yes |  |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |

### Update an authenticated domain
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/update-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| domain_id | string | yes |  |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |
| body | object | no | JSON request body |

### Delete an authenticated domain.
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/delete-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| domain_id | string | yes |  |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |

### Associate an authenticated domain with a given user.
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/associate-subuser-with-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| domain_id | integer | yes | ID of the authenticated domain to associate with the subuser. |
| body | object | no | JSON request body |

### Disassociate an authenticated domain from a given user for users with up to five associated domains.
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/disassociate-subuser-from-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| username | string | no | Username for the subuser to find associated authenticated domain. |
| domain_id | integer | yes | ID of the authenticated domain to be disassociated with the subuser. |

### Associate an authenticated domain with a given user, for up to five domains.
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/associate-subuser-with-domain-multiple` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| domain_id | integer | yes | ID of the authenticated domain to associate with the subuser. |
| body | object | no | JSON request body |

### Add an IP to an authenticated domain
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/add-ip-to-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| id | integer | yes | ID of the domain to which you are adding an IP |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |
| body | object | no | JSON request body |

### Remove an IP from an authenticated domain.
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/delete-ip-from-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| id | integer | yes | ID of the domain to delete the IP from. |
| ip | string | yes | IP to remove from the domain. |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |

### Validate a domain authentication.
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/validate-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| id | integer | yes | ID of the domain to validate. |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |

### Get the default authentication
`GET https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/list-default-authenticated-domain` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| domain | string | no | The domain to find a default authentication. |
| on-behalf-of | string | no | The `on-behalf-of` header allows you to make API calls from a parent account on behalf of the parent's Subusers or customer accounts. You… |

### List the authenticated domain associated with the given user.
`GET https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/list-authenticated-domain-with-user` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| username | string | yes | Username for the subuser to find associated authenticated domain. |

### Disassociate an authenticated domain from a given user.
`POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/disassociate-authenticated-domain-from-user` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| username | string | no | Username for the subuser to find associated authenticated domain. |

### List all the authenticated domains associated with the given user.
`GET https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/list-all-authenticated-domain-with-user` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| username | string | yes | Username for the subuser to find associated authenticated domains. |

## Example
```
curl "https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/email-dns-record" \
  -H "x-api-key: $APIZIE_KEY" \
  -H "x-upstream-key: $PROVIDER_KEY"
```

## FAQ

### How do I call the Twilio SendGrid Domain Authentication API API?
Create a free Apizie key, then send POST https://apizie.tech/v1/communication:sendgrid-domain-authentication-v3/email-dns-record with the header x-api-key. Every endpoint returns { project, data, timestamp }.

### Is the Twilio SendGrid Domain Authentication API API free on Apizie?
Yes. The Free plan includes 1,000 requests a month at 100 requests a minute, no credit card. Twilio SendGrid Domain Authentication API itself also needs your own key from sendgrid.com.

### Can AI agents use the Twilio SendGrid Domain Authentication API API?
Yes. Add the Apizie MCP server (https://apizie.tech/mcp) to Claude, ChatGPT, Cursor or VS Code, then ask in plain language. The agent calls run_scraper with project key communication:sendgrid-domain-authentication-v3.

### What is the status of the Twilio SendGrid Domain Authentication API API?
Needs your own provider key (bring your own key)