# JoshData/python-email-validator

A robust email syntax and deliverability validation library for Python.

Repository: https://github.com/JoshData/python-email-validator
Canonical: https://ross.abutalabs.com/products/python-email-validator
Language: Python
License: Unlicense
License Family: permissive
Topics: dns, email, validation, normalization, syntax
Last push: 2026-06-26T12:52:19+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 89, release rhythm 12, longevity 100
- inputs: {"age_days": 4153, "days_push": 68, "days_rel": 372, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1439, forks 139 (observed 2026-08-28T04:04:44.088278+00:00)

## What it is
A Python library that validates email address syntax and optionally checks domain deliverability via DNS. It normalizes addresses, supports internationalized domains and local parts, and produces friendly error messages for end users.

## Use cases
- validate email addresses on a registration form
- check if an email domain can receive mail
- normalize email addresses before storing them in a database
- validate internationalized email addresses with unicode
- show friendly error messages for invalid emails
- validate email syntax in data pipelines

## When to choose
- you need opinionated, strict email validation with deliverability checks
- you want human-readable validation errors to show users
- you handle internationalized or quoted-string email addresses
- you need address normalization for deduplication

## When to avoid
- you need less opinionated syntax-only validation (consider pyIsEmail)
- you want to verify that a mailbox actually exists
- you need bulk email list cleaning or marketing verification

## Facets
- artifact type: library
- maturity: stable
- function: email, form-handling, nlp
- domain: email, web-development, backend, developer-tools
- platform: python, cross-platform
- tags: email-validation, deliverability, dns-lookup, normalization, internationalized-email, form-validation

## Member repositories
- JoshData/python-email-validator (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:44.088278+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:36:34.822025+00:00, confidence not recorded.
  - readme: https://github.com/JoshData/python-email-validator (fetched 2026-08-28T04:04:44.088278+00:00, sha 09115764025e)
- Data as of 2026-08-30T08:39:29.467469+00:00.