# Twilio SendGrid Legacy Marketing Campaigns Sender Identities API API

> Twilio SendGrid Legacy Marketing Campaigns Sender Identities API API on Apizie: 6 endpoints (Get all Sender Identities, Create a Sender Identity, View a Sender Identity, Update a Sender Identity, …) 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-lmc-senders-v3/{endpoint} or from Claude, ChatGPT and Cursor through the Apizie MCP server. Free plan: 1,000 requests a month.

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

The Twilio SendGrid Legacy Marketing Campaigns Sender Identites API allows you to manage the email addresses used to send your marketing email. This API is operational, but we recommend using the current version of…

## Endpoints

### Get all Sender Identities
`GET https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/list-sender` (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… |

### Create a Sender Identity
`POST https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/create-sender` (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 |

### View a Sender Identity
`GET https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/get-sender` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| sender_id | integer | yes | The ID of the sender identity that you want to retrieve. |
| 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 a Sender Identity
`POST https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/update-sender` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| sender_id | integer | yes | The ID of the sender identity that you want to retrieve. |
| 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 a Sender Identity
`POST https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/delete-sender` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| sender_id | integer | yes | The ID of the sender identity that you want to retrieve. |
| 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… |

### Resend Sender Identity Verification
`POST https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/reset-sender-verification` (byok)

| Parameter | Type | Required | Description |
|---|---|---|---|
| sender_id | integer | yes | The ID of the sender identity for which you would like to resend a verification email. |
| 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… |

## Example
```
curl "https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/list-sender" \
  -H "x-api-key: $APIZIE_KEY" \
  -H "x-upstream-key: $PROVIDER_KEY"
```

## FAQ

### How do I call the Twilio SendGrid Legacy Marketing Campaigns Sender Identities API API?
Create a free Apizie key, then send GET https://apizie.tech/v1/communication:sendgrid-lmc-senders-v3/list-sender with the header x-api-key. Every endpoint returns { project, data, timestamp }.

### Is the Twilio SendGrid Legacy Marketing Campaigns Sender Identities 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 Legacy Marketing Campaigns Sender Identities API itself also needs your own key from sendgrid.com.

### Can AI agents use the Twilio SendGrid Legacy Marketing Campaigns Sender Identities 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-lmc-senders-v3.

### What is the status of the Twilio SendGrid Legacy Marketing Campaigns Sender Identities API API?
Needs your own provider key (bring your own key)