> ## Documentation Index > Fetch the complete documentation index at: https://developer.lemlist.com/llms.txt > Use this file to discover all available pages before exploring further. > Initiates an asynchronous export of campaign statistics to a CSV file. # Start Campaign Stats Export You first start an export, get an export ID, and then periodically check the status of the export with the [Get Campaign Export Status](/api-reference/endpoints/campaigns/get-campaign-export-status) endpoint. You should stop polling as soon as you have a status that is different than "pending". Multiple exports on the same campaign can be done simultaneously as it is export ID based. ## How it works 1. **Start the export**: Call this endpoint to initiate the export process. You'll receive an `exportId` in the response. 2. **Check status**: Use the `exportId` with the [Get Campaign Export Status](/api-reference/endpoints/campaigns/get-campaign-export-status) endpoint to periodically check the export status. 3. **Download**: Once the status is `"done"`, use the provided URL to download the CSV file. The export is ID-based rather than campaign-based, allowing multiple simultaneous exports of the same campaign (e.g., one by a user in the application and another by a script). ## Response The response includes: * **exportId**: Use this to check the export status * **status**: Will be `"pending"` initially, then `"done"` or `"error"` * **progress information**: Track the export progress ## Next steps After starting an export, use the [Get Campaign Export Status](/api-reference/endpoints/campaigns/get-campaign-export-status) endpoint to monitor progress and retrieve the download URL when ready. ## OpenAPI ````yaml get /campaigns/{campaignId}/export/start openapi: 3.0.0 info: title: lemlist API version: 1.0.0 description: >- Welcome to the lemlist Developer Documentation. lemlist is very customizable and open. You'll find on this page all the API and integration you can do with lemlist. # Rate Limit lemlist's API rate limits requests in order to prevent abuse and overload of our services. Rate limits are applied on all routes and per API key performing the request. The rate limits are **20** requests per **2** seconds. The response provides any information you may need about it: | Header | Description | | --- | --- | | Retry-After | The number of seconds in which you can retry | | X-RateLimit-Limit | The maximum requests in that time | | X-RateLimit-Remaining | The number of remaining requests you can make | | X-RateLimit-Reset | The date when the rate limit will reset | _Example of values for the rate limit headers_ ``` json { "Retry-After": 2, "X-RateLimit-Limit": 20, "X-RateLimit-Remaining": 7, "X-RateLimit-Reset" : "Tue Feb 16 2021 09:02:42 GMT+0100 (Central European Standard Time)" } ``` # Definitions ## Team A team is the entity of lemlist that can handle users and billing. ## Credits Credits are the coins a team uses to enrich emails, LinkedIn URLs, etc. via the enrich route. Each enrichment feature needs a certain amount of credits to run. ## User You use a user account to connect to lemlist and send messages via the connected emails or LinkedIn account. ## Campaign A campaign is the entity to automate outreach. A campaign has multiple sequences composed of steps. ## Lead A lead is a person that you try to contact via a campaign. ## Activity An activity is the history of all the steps. ## Unsubscribe An unsubscribe occurs when a person decides they don't want to receive emails from you anymore. # Authentication All API routes use the dedicated subdomain `api.lemlist.com`. lemlist uses API keys to allow access to the API. You can get your lemlist API key at our [integration page](https://app.lemlist.com/settings/integrations). You need to add the `Authorization` header using the `Basic` authentication type. `login:password` **where the login is always empty and the password is the API key**. ⚠️ **Don't forget to add the semicolon (**`:`**) before your API key in curl command.** > To authorize, use this code: ``` shell curl https://api.lemlist.com/api/team \ --user ":YourApiKey" ``` **Make sure to replace** **`YourApiKey`** **with your API key.** # Give feedback If you want to report a bug, ask for data, or share with us a use case, please fill this [form](https://lemlist.typeform.com/to/mfVlkyGf). It will help us centralize your needs! servers: - url: https://api.lemlist.com/api security: - basicAuth: [] paths: /campaigns/{campaignId}/export/start: parameters: - name: campaignId in: path required: true description: The unique identifier of the campaign to export example: cam_A1B2C3D4E5F6G7H8I9 schema: type: string get: tags: - Campaigns summary: Start Campaign Stats Export description: >- Start an asynchronous export of all campaign statistics. The final export result is a CSV file. parameters: [] responses: '200': description: Export started successfully content: application/json: schema: type: object properties: _id: type: string description: The unique identifier of the export id: type: string description: The unique identifier of the export (same as _id) teamId: type: string description: The team identifier campaignId: type: string description: The campaign identifier campaignName: type: string description: The name of the campaign status: type: string enum: - pending - done - error description: Current status of the export startedAt: type: string format: date-time description: When the export was started progressIndex: type: integer description: Current progress index progressTime: type: integer description: Timestamp of progress progressLastStepDuration: type: integer description: Duration of last step in milliseconds progressType: type: string description: Type of current progress step progress: type: integer description: Number of items processed total: type: integer description: Total number of items to process example: _id: axp_Vv6lJOc8NlVVmDud5 id: axp_Vv6lJOc8NlVVmDud5 teamId: tea_c123fg5h8ijKL9noP campaignId: cam_A1B2C3D4E5F6G7H8I9 campaignName: Insights Outreach 2024 status: pending startedAt: '2024-07-09T13:43:52.124Z' progressIndex: 0 progressTime: 1720532632124 progressLastStepDuration: 0 progressType: starting progress: 0 total: 0 '400': description: Bad team content: text/plain: example: Bad team '401': description: Unauthorized '404': description: Campaign not found content: text/plain: example: Campaign not found components: securitySchemes: basicAuth: type: http scheme: basic ````