# Replace sender URL: https://docs.hanzo.ai/docs/openapi/marketing/put-marketing-sender > Replaces the org's sender and answers it. `PUT /v1/marketing/sender` > [Marketing →](https://docs.hanzo.ai/docs/openapi/marketing) · [All API references →](https://docs.hanzo.ai/docs/openapi) · [Get started →](https://docs.hanzo.ai/docs/guides) | | | | ------------- | ------------------------------------------ | | **Address** | `https://api.hanzo.ai/v1/marketing/sender` | | **Method** | `PUT` | | **Operation** | `put_marketing_sender` | | **Auth** | `Authorization: Bearer $HANZO_API_KEY` | Replaces the org's sender and answers it. Every field is written; one left out is cleared. Org admin only. ## Request 7 fields, body `application/json` (required). | Field | In | Type | Required | Description | | ------------- | ---- | ------ | -------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `company` | body | string | — | Company is the sender's legal name in the footer. | | `fromAddress` | body | string | — | FromAddress is the sender's address. | | `fromName` | body | string | — | FromName is the sender's name. | | `postal` | body | string | — | Postal is the sender's physical postal address (CAN-SPAM). | | `provider` | body | string | — | Provider is ses or sendgrid; empty takes the platform's default. | | `replyTo` | body | string | — | ReplyTo is where replies go. | | `site` | body | string | — | Site is the org's public site, as a host name ("acme.com"), which serves /newsletter/confirm and /newsletter/preferences: the pages a confirmation link and a preference link open. | ## Response | Status | Body | Meaning | | --------- | ---------------- | ------- | | `200` | marketing.Sender | ok | | `default` | problem-details | refused | `200` body — 7 fields. | Field | In | Type | Always | Description | | ------------- | ---- | ------ | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `company` | body | string | — | Company is the sender's legal name in the footer. | | `fromAddress` | body | string | — | FromAddress is the sender's address. | | `fromName` | body | string | — | FromName is the sender's name. | | `postal` | body | string | — | Postal is the sender's physical postal address (CAN-SPAM). | | `provider` | body | string | — | Provider is ses or sendgrid; empty takes the platform's default. | | `replyTo` | body | string | — | ReplyTo is where replies go. | | `site` | body | string | — | Site is the org's public site, as a host name ("acme.com"), which serves /newsletter/confirm and /newsletter/preferences: the pages a confirmation link and a preference link open. | Failure carries the platform error shape — see [Errors](https://docs.hanzo.ai/docs/errors). ## Examples **CLI** ```bash hanzo marketing sender replace ``` **SDK** **.ts** ```ts import { Configuration, MarketingApi } from 'hanzoai'; const api = new MarketingApi(new Configuration({ accessToken: process.env.HANZO_API_KEY })); const { data } = await api.putMarketingSender({ company: "", fromAddress: "" }); ``` **.py** ```python from hanzoai.cloud import ApiClient, Configuration from hanzoai.cloud.api import MarketingApi client = ApiClient(Configuration(access_token=os.environ["HANZO_API_KEY"])) result = MarketingApi(client).put_marketing_sender(company="", from_address="") ``` **.go** ```go cfg := hanzoai.NewConfiguration() cfg.AddDefaultHeader("Authorization", "Bearer "+os.Getenv("HANZO_API_KEY")) client := hanzoai.NewAPIClient(cfg) resp, _, err := client.MarketingAPI.PutMarketingSender(context.Background()).Execute() if err != nil { return err } ``` **.rs** ```rust use hanzo_client::apis::{configuration::Configuration, marketing_api}; let mut cfg = Configuration::new(); cfg.bearer_access_token = std::env::var("HANZO_API_KEY").ok(); let result = marketing_api::put_marketing_sender(&cfg, Default::default()).await?; ``` **.java** ```java import ai.hanzo.cloud.ApiClient; import ai.hanzo.cloud.api.MarketingApi; ApiClient client = new ApiClient(); client.setBearerToken(System.getenv("HANZO_API_KEY")); var result = new MarketingApi(client).putMarketingSender(); ``` The method above is the one at the current release of the document. `hanzoai@8.5.914` (npm) and `hanzoai@8.5.914` (PyPI) were generated from an earlier release, where this operation carried a different id, so it spells the method differently — regenerating the clients is what makes the two agree. [SDKs →](https://docs.hanzo.ai/docs/sdks) **HTTP** ```bash curl -X PUT https://api.hanzo.ai/v1/marketing/sender \ -H "Authorization: Bearer $HANZO_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "company": "", "fromAddress": "" }' ``` **MCP** MCP reaches **marketing** through the `marketing` tool, which names its 82 operations with its own verbs — this one among them, under a name only MCP declares. `describe` explains any of them: ```bash curl -X POST https://api.hanzo.ai/v1/mcp \ -H "Content-Type: application/json" \ -d '{ "jsonrpc": "2.0", "id": 1, "method": "tools/call", "params": { "name": "describe", "arguments": { "op": "list_marketing_audiences" } } }' ``` --- [Marketing API](https://docs.hanzo.ai/docs/openapi/marketing) · [All Hanzo APIs](https://docs.hanzo.ai/docs/openapi) · [Interactive reference](https://docs.hanzo.ai/docs/openapi/reference)