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

# Changelog

> Release history for the SendFlit API and SDKs.

## v1.0.0: initial release

**Released 2026-10-09**

* **API v1** at `https://api.sendflit.com/v1`: sending (single and batch), scheduled sending and cancellation, email status, domains with DKIM, SPF and DMARC verification, API keys with `full`, `sending`, and `read` scopes, webhooks, and usage.
* **Idempotency keys** on send and batch requests. Reusing a key with a different body returns `409`.
* **Webhook signing** with HMAC-SHA256 in `X-Sendflit-Signature`.
* **SDKs:** Node.js, Python, Go, Ruby, PHP, Java, .NET, and React email components. The Node.js and Python SDKs support idempotency keys.
* **Health check** at `GET /health`.

Package registry publication is in progress. Check the [SDK overview](/) for the current install status of each package.


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