---
title: Async Support for the Python SDK
slug: python-sdk-async-support
description: 'Send emails asynchronously in Python using the new async methods powered by httpx.'
image: https://cdn.resend.com/posts/python-sdk-async-support.jpg
created_at: "2026-04-02"
updated_at: "2026-04-02"
humans: ["derich-pacheco"]
---

The Python SDK now supports async out of the box. If you are building with FastAPI, async Django, or any other async Python framework, you can now send emails without blocking your event loop.

## Installation

Install the SDK with the `async` extra to pull in `httpx`:

```bash
pip install "resend[async]"
```

## Sending an email asynchronously

Every method in the SDK has an `_async` counterpart. Await it like any other coroutine:

```python
import asyncio
import resend

resend.api_key = "re_your_api_key"

async def main():
    params: resend.Emails.SendParams = {
        "from": "onboarding@resend.dev",
        "to": ["delivered@resend.dev"],
        "subject": "Hello from async Python",
        "html": "<strong>it works!</strong>",
    }

    email = await resend.Emails.send_async(params)
    print(email)

asyncio.run(main())
```

## Batch sending

The same pattern applies to batch sends:

```python
emails = await resend.Batch.send_async([params1, params2])
```

## Custom timeout

If you need to configure the underlying HTTP client, you can swap in your own instance:

```python
resend.default_async_http_client = resend.HTTPXClient(timeout=60)
```

## No breaking changes

The existing sync API is unchanged — `resend.Emails.send(params)` continues to work exactly as before. Async is opt-in: if `httpx` is not installed, calling an `_async` method raises a `ResendError` with code `AsyncClientNotConfigured`.

All SDK modules have async counterparts: `Emails`, `Batch`, `ApiKeys`, `Audiences`, `Broadcasts`, `Contacts`, and `Domains`.

Check the [Python SDK on GitHub](https://github.com/resend/resend-python) if you want to follow along or open an issue.