> ## Documentation Index
> Fetch the complete documentation index at: https://developers.vfbulk.ie/llms.txt
> Use this file to discover all available pages before exploring further.

# Legacy API Overview

> Long-term support documentation for the Vodafone Bulk Text v1 APIs.

<Warning>
  These APIs are maintained for **long-term support** only. New integrations should use the [Vodafone Bulk Text API v2](/api-reference/introduction), which offers OAuth 2.0 authentication, campaign naming, scheduling, and improved error handling.
</Warning>

The v1 URL-encoded API is available at `http://bulktext.vodafone.ie/HTTP_API/V1` and uses **basic credential authentication**. You pass your username, password, and API ID directly in the form body.

## Available legacy APIs

<CardGroup cols={1}>
  <Card title="URL-Encoded API (v1)" icon="link">
    Send SMS via `application/x-www-form-urlencoded`. This is the legacy API covered by the current Vodafone OpenAPI spec.
  </Card>
</CardGroup>

## Key differences vs v2

| Feature           | v1 (Legacy)                        | v2 (Current)                |
| ----------------- | ---------------------------------- | --------------------------- |
| Auth              | Credentials in body                | OAuth 2.0 JWT               |
| Bulk send         | Single recipient                   | Multiple recipients         |
| Scheduling        | Unix timestamp                     | ISO 8601 datetime           |
| Campaign tracking | `NotifyId` only                    | `campaignName` + `notifyId` |
| Response format   | Plain text status code and message | Structured JSON             |