---
title: "Send bulk SMS via CSV string (POST)"
method: POST
path: "/UploadCsvFile"
tags: ["CSV Message"]
---

# Send bulk SMS via CSV string (POST)

`POST /UploadCsvFile`

Send bulk SMS using CSV data passed as the `filestring` parameter.
Use application/x-www-form-urlencoded. For large payloads, POST is preferred.

## Response `200`

Request processed (success or error)

## Other responses

- `400` — Bad Request - Invalid parameters or missing required fields
- `401` — Unauthorized - Invalid credentials
- `500` — Internal Server Error

---

[API](https://skmtc.dev/netcorecloud/apis/email-api-v6.md) · [All operations](https://skmtc.dev/netcorecloud/apis/email-api-v6/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/netcorecloud/email-api-v6/revisions/73f83bc2eff8/schema)