Async Support for the Python SDK

Send emails asynchronously in Python using the new async methods powered by httpx.

The Python SDK now supports async out of the box for FastAPI, async Django, and other async Python frameworks.

Installation

pip install "resend[async]"

Sending an email asynchronously

Every method has an _async counterpart:

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())

No breaking changes

The existing sync API is unchanged. 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.