---
id: zerobouncesdk
version: "2.2.4"
license: MIT
license_treatment: permissive
maintenance: active
---

# zerobouncesdk — ZeroBounce Python API - https://www.zerobounce.net.

License: permissive · Maintenance: active · Downloads: 442.5K/mo

## What it is and what it does

The ZeroBounce Python SDK is a client library that wraps the ZeroBounce email validation API, allowing developers to programmatically validate email addresses, check account credits, analyze API usage, and discover email formats. It depends only on requests and supports Python 3.7 and later.

The SDK provides both single-email and batch validation (up to 100 emails per request), file-based bulk validation with callback URLs, and utility methods for querying subscriber engagement and discovering email formats by domain or company name. It includes region-specific API endpoints (USA, EU, default) and custom URL support for alternative deployments.

Use it for:

- Validate email addresses in real-time during user registration or form submission.
- Perform bulk validation of existing email lists to remove invalid or inactive addresses.
- Discover the likely email format for a person given their name and company or domain.
- Monitor account credit balance and API usage to track validation costs and quota.
- Analyze subscriber engagement history to identify inactive or problematic email addresses.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Python SDK for the ZeroBounce email validation and verification API, providing methods to validate individual and batch emails, check account credits, retrieve API usage, and discover email formats.

Yes. The SDK is actively maintained, has low install friction, carries a permissive MIT license, and provides a straightforward wrapper around a widely-used email validation service. Install it if you need to integrate ZeroBounce validation into a Python application. No known security vulnerabilities as of 2026-08-14.

## Install

pip install zerobouncesdk
uv add zerobouncesdk
poetry add zerobouncesdk

## Installing zerobouncesdk

Before you install: Low install friction with a single runtime dependency (requests). Active maintenance with a recent release on 2026-08-14. Repository is not archived and shows ongoing development.

License in practice: MIT license permits use, modification, and distribution with minimal restrictions, making it suitable for both open-source and commercial projects.

Quickstart:

pip install zerobouncesdk

from zerobouncesdk import ZeroBounce

zero_bounce = ZeroBounce("<YOUR_API_KEY>")
response = zero_bounce.validate("test@example.com")
print(response)

Requires a valid ZeroBounce API key to make requests; API calls will fail without authentication.

Verify before relying:

- Whether the SDK supports asynchronous operations or is synchronous-only.
- Rate limiting behavior and handling of API quota exhaustion.
- Error recovery and retry logic for transient failures.
- Data retention and privacy guarantees for validated email addresses.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 442.5K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

email validation api sdk, zerobounce python client, email verification sdk, batch email validation, email format discovery, email deliverability check, api wrapper zerobounce, email-validation, api-client, zerobounce

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