customerio
Customer.io Python bindings.
Decision gist · record as of 2026-08-14
Yes. The package is actively maintained, has low install friction, carries a permissive MIT license, and is production-stable. Install it if you need to integrate Customer.io into a Python application for customer tracking, profile management, or transactional messaging.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.10 or later; you must obtain a Customer.io site ID and API key from your account settings.
- Low install friction with only two runtime dependencies (requests and urllib3).
- The package is actively maintained with a recent release and supports current Python versions (3.10 through 3.14).
License · maintenance · safety
MIT (permissive) — MIT license permits free use, modification, and distribution with minimal restrictions, making it suitable for both open-source and commercial projects.
last release 2026-07-24 (21 days) · last repo commit 2026-07-24 · 65 stars
0 known vulnerabilities (OSV.dev, 2026-08-14) · 845,120 downloads/mo, #4,920 on PyPI
Alternatives
Verify before relying
pip install customerio
from customerio import CustomerIO, Regions
cio = CustomerIO(site_id="your_site_id", api_key="your_api_key", region=Regions.US)
cio.identify(id="5", email="customer@example.com", name="Bob")
cio.track(customer_id="5", name="purchased", data={"price": 23.45})- Whether the package handles automatic retries or rate-limiting for API calls
- Performance characteristics when tracking high-volume events
- Whether webhook or callback support is available for asynchronous operations
What it is and what it does
The customerio package is an official Python client for Customer.io, a customer data and engagement platform. It wraps Customer.io's REST API, letting you programmatically manage customer profiles, track behavioral events, and send transactional messages from within your Python application.
The library handles authentication via site ID and API key, supports US and EU region selection, and provides methods for core operations: identifying or updating customer profiles with custom attributes, tracking events with optional timestamps and deduplication IDs, backfilling historical events, managing devices, suppressing customers, and sending transactional emails. It depends only on requests and urllib3 for HTTP communication.
Use it for
- Track user behavior events (purchases, sign-ups, feature usage) in real-time to feed Customer.io campaigns and journeys
- Identify and update customer profiles with custom attributes when users sign up or update their account information
- Send transactional emails (password resets, order confirmations) through Customer.io's Transactional API
- Backfill historical events for data migration or retroactive campaign targeting
- Manage customer suppression lists to honor opt-outs and privacy requests programmatically
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes.
The package is actively maintained, has low install friction, carries a permissive MIT license, and is production-stable. Install it if you need to integrate Customer.io into a Python application for customer tracking, profile management, or transactional messaging.
Install
customerio on PyPI
Before you install
Low install friction with only two runtime dependencies (requests and urllib3). The package is actively maintained with a recent release and supports current Python versions (3.10 through 3.14).
Requires Python 3.10 or later; you must obtain a Customer.io site ID and API key from your account settings.
License in practice
MIT license permits free use, modification, and distribution with minimal restrictions, making it suitable for both open-source and commercial projects.
Quickstart
pip install customerio
from customerio import CustomerIO, Regions
cio = CustomerIO(site_id="your_site_id", api_key="your_api_key", region=Regions.US)
cio.identify(id="5", email="customer@example.com", name="Bob")
cio.track(customer_id="5", name="purchased", data={"price": 23.45})Verify before relying
- Whether the package handles automatic retries or rate-limiting for API calls
- Performance characteristics when tracking high-volume events
- Whether webhook or callback support is available for asynchronous operations
Package facts
| License | MIT permissive |
| Python support | Supports the current Python release >=3.10 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesrequestsurllib3 |
| Maintenance | Actively maintained 21 days since the last release |
| Last repo commit | |
| First released | |
| Downloads | 845,120 / month, #4,920 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableEnvironment :: Web EnvironmentIntended Audience :: DevelopersOperating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3 :: OnlyProgramming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14 |
Evidence: customerio-3.2.0-py3-none-any.whl
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See also customerio-cdp-analytics · delighted · stigg-sidecar-sdk · WooCommerce · klaviyo · rudder-sdk-python · segment-analytics-python · openmeter · pycdc · onesignal-python-api