# Retrieve a single campaign ## API Overview > \[!WARNING] > > This covers the obsolete Legacy Marketing Campaigns API. > \[!NOTE] > > For the most up-to-date information on the Sender Identities API, please visit the [new Marketing Campaigns Single Sends API](/docs/sendgrid/api-reference/single-sends). The Campaigns API allows you to create and manage marketing campaigns. You can create campaigns, manage campaign content, and schedule campaigns to be sent at a later time. ## Operation overview ```json {"path":"https://api.sendgrid.com/v3/campaigns/{campaign_id}","method":"get","servers":[{"url":"https://api.sendgrid.com","description":"The Twilio SendGrid v3 API"}]} ``` **This endpoint allows you to retrieve a specific campaign.** ## Operation details ### Authentication API Key ### Headers ```json [{"in":"header","name":"Authorization","required":true,"default":"Bearer <>","schema":{"type":"string"}},{"name":"on-behalf-of","in":"header","description":"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 will use the parent account's API key when using this header. When making a call on behalf of a customer account, the property value should be \"account-id\" followed by the customer account's ID (e.g., `on-behalf-of: account-id `). When making a call on behalf of a Subuser, the property value should be the Subuser's username (e.g., `on-behalf-of: `). See [**On Behalf Of**](/docs/sendgrid/api-reference/how-to-use-the-sendgrid-v3-api/on-behalf-of) for more information.","required":false,"schema":{"type":"string"},"refName":"#/components/parameters/OnBehalfOf","modelName":"__components_parameters_OnBehalfOf"}] ``` ### Path parameters ```json [{"name":"campaign_id","in":"path","description":"The id of the campaign you would like to retrieve.","required":true,"schema":{"type":"integer"}}] ``` ### Responses ```json [{"responseCode":"200","schema":{"description":"","content":{"application/json":{"schema":{"type":"object","properties":{"categories":{"type":"array","items":{"type":"string"}},"custom_unsubscribe_url":{"type":"string"},"html_content":{"type":"string"},"id":{"type":"integer"},"ip_pool":{"type":"string"},"list_ids":{"type":"array","items":{"type":"integer"}},"plain_content":{"type":"string"},"segment_ids":{"type":"array","items":{"type":"integer"}},"sender_id":{"type":"integer"},"status":{"type":"string"},"subject":{"type":"string"},"suppression_group_id":{"type":"integer"},"title":{"type":"string"}}},"examples":{"response":{"value":{"categories":["spring line"],"custom_unsubscribe_url":"","html_content":"

Check out our spring line!

","id":986724,"ip_pool":"marketing","list_ids":[110],"plain_content":"Check out our spring line!","segment_ids":[110],"sender_id":124451,"status":"Draft","subject":"New Products for Spring!","suppression_group_id":42,"title":"March Newsletter"}}}}}}},{"responseCode":"401","schema":{"description":"","content":{"application/json":{"schema":{"type":"object"},"examples":{"response":{"value":{"errors":[{"field":null,"message":"authorization required"}]}}}}}}},{"responseCode":"404","schema":{"description":"Not found","content":{"application/json":{"schema":{"type":"object"},"examples":{"response":{"value":{"errors":[{"field":null,"message":"not found"}]}}}}}}}] ``` Retrieve a single campaign ```js const client = require("@sendgrid/client"); client.setApiKey(process.env.SENDGRID_API_KEY); const campaign_id = 42; const request = { url: `/v3/campaigns/${campaign_id}`, method: "GET", }; client .request(request) .then(([response, body]) => { console.log(response.statusCode); console.log(response.body); }) .catch((error) => { console.error(error); }); ``` ```python import os from sendgrid import SendGridAPIClient sg = SendGridAPIClient(os.environ.get("SENDGRID_API_KEY")) campaign_id = 42 response = sg.client.campaigns._(campaign_id).get() print(response.status_code) print(response.body) print(response.headers) ``` ```csharp using System; using System.Collections.Generic; using System.Threading.Tasks; using SendGrid; public class Program { public static async Task Main() { string apiKey = Environment.GetEnvironmentVariable("SENDGRID_API_KEY"); var client = new SendGridClient(apiKey); var campaignId = 42; var response = await client.RequestAsync( method: SendGridClient.Method.GET, urlPath: $"campaigns/{campaignId}"); Console.WriteLine(response.StatusCode); Console.WriteLine(response.Body.ReadAsStringAsync().Result); Console.WriteLine(response.Headers.ToString()); } } ``` ```java import com.sendgrid.*; import java.io.IOException; public class Example { public static void main(String[] args) throws IOException { try { SendGrid sg = new SendGrid(System.getenv("SENDGRID_API_KEY")); Request request = new Request(); request.setMethod(Method.GET); request.setEndpoint("/campaigns/42"); Response response = sg.api(request); System.out.println(response.getStatusCode()); System.out.println(response.getBody()); System.out.println(response.getHeaders()); } catch (IOException ex) { throw ex; } } } ``` ```go package main import ( "fmt" "github.com/sendgrid/sendgrid-go" "os" ) func main() { apiKey := os.Getenv("SENDGRID_API_KEY") host := "https://api.sendgrid.com" request := sendgrid.GetRequest(apiKey, "/v3/campaigns/42", host) request.Method = "GET" response, err := sendgrid.API(request) if err != nil { fmt.Println(err.Error()) os.Exit(1) } else { fmt.Println(response.StatusCode) fmt.Println(response.Body) fmt.Println(response.Headers) } } ``` ```php /sendgrid-php.php'; $apiKey = getenv("SENDGRID_API_KEY"); $sg = new \SendGrid($apiKey); $campaign_id = 42; try { $response = $sg->client ->campaigns() ->_($campaign_id) ->get(); print $response->statusCode() . "\n"; print_r($response->headers()); print $response->body() . "\n"; } catch (Exception $ex) { echo "Caught exception: " . $ex->getMessage(); } ``` ```ruby require 'sendgrid-ruby' include SendGrid sg = SendGrid::API.new(api_key: ENV['SENDGRID_API_KEY']) campaign_id = 42 response = sg.client.campaigns._(campaign_id).get() puts response.status_code puts response.headers puts response.body ``` ```bash curl -X GET "https://api.sendgrid.com/v3/campaigns/42" \ --header "Authorization: Bearer $SENDGRID_API_KEY" ```