---
id: neverbounce-sdk
version: "4.3.0"
license: MIT
license_treatment: permissive
maintenance: abandoned
---

# neverbounce-sdk — Official Python SDK for the NeverBounce API

License: permissive · Maintenance: abandoned · Downloads: 161.6K/mo

## What it is and what it does

The NeverBounce SDK is an official Python client for NeverBounce's email verification API v4. It wraps HTTP calls to the service behind a simple Python interface, allowing you to verify individual email addresses, create and manage bulk verification jobs, and query account information. The library depends only on requests for HTTP communication and can optionally use a custom requests.Session for connection pooling.

The package is mature and stable in its current form, but is no longer maintained—the last commit was in December 2022 and the last release in August 2020. It supports Python 2.7 and Python 3.3–3.7 according to its classifiers, though actual compatibility with modern Python versions is unverified. If your codebase is locked to older Python versions or if you need a stable, read-only integration with NeverBounce's v4 API, this SDK may serve that purpose; for active development or modern Python environments, you should verify compatibility or consider alternatives.

Use it for:

- Verify individual email addresses in real time before adding them to a mailing list or user database.
- Create and manage bulk email verification jobs for cleaning large contact lists.
- Query account information and job status to monitor verification progress and credit usage.
- Iterate through paginated search results of past jobs using the built-in ResultIter pagination helper.
- Attach custom metadata to bulk job rows and retrieve it in the results for downstream processing.

## Worth the install?

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

Python client library for the NeverBounce email verification API v4, enabling single email checks, bulk job management, and account queries.

No, unless you are maintaining legacy code already bound to this SDK. The package is abandoned (last release August 2020, last commit December 2022) and will not receive updates for modern Python versions or API changes. If you need NeverBounce integration in a new project, contact NeverBounce directly for current SDK recommendations or build a thin wrapper around their v4 API using requests directly.

## Install

pip install neverbounce-sdk
uv add neverbounce-sdk
poetry add neverbounce-sdk

## Installing neverbounce-sdk

Before you install: Low install friction with a single dependency (requests). However, the package is abandoned—last commit was 2022-12-07 and no releases since 2020-08-05. It will not receive bug fixes or updates for modern Python versions.

License in practice: MIT license is permissive and places no restrictions on use, modification, or distribution in proprietary or open-source projects.

Quickstart:

pip install neverbounce_sdk

import neverbounce_sdk
client = neverbounce_sdk.client(api_key='secret_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx')
result = client.single_check('test@example.com')
print(result['result'])  # 'invalid', 'valid', etc.

Requires a valid NeverBounce API v4 key (format: secret_xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx); v3 credentials will not work.

Verify before relying:

- Whether the package works reliably with Python versions released after 2020 (last release was 2020-08-05).
- Current status of NeverBounce's API v4 endpoint and whether it remains stable.
- Whether requests library version constraints exist that may conflict with modern environments.

## Package facts

- License: MIT (permissive)
- Python support: unspecified
- Install friction: low
- Maintenance: abandoned
- Downloads: 161.6K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

email verification api client, neverbounce python sdk, bulk email validation, email address verification, email cleaning service, email validation library, api client for email verification, email-verification, abandoned

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