# AfterShip/email-verifier

:white_check_mark: A Go library for email verification without sending any emails.

Repository: https://github.com/AfterShip/email-verifier
Canonical: https://ross.abutalabs.com/products/email-verifier
Language: Go
License: MIT
License Family: permissive
Topics: go, smtp, email, verifier, verification, validation, disposable
Last push: 2026-08-26T09:38:51+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 8, longevity 100
- inputs: {"age_days": 2084, "days_push": 7, "days_rel": 720, "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 1607, forks 232 (observed 2026-08-28T04:05:10.377657+00:00)

## What it is
A Go library for verifying email addresses without sending any emails. It validates syntax, checks DNS MX records, performs SMTP verification lookups with catch-all detection, and flags free providers, role accounts, and disposable email addresses.

## Use cases
- validate email addresses at signup
- check if an email domain has valid MX records
- detect disposable email addresses
- verify whether a mailbox exists via SMTP without sending mail
- detect catch-all email domains
- check if an email is from a free provider or role account

## When to choose
- you need email validation in a Go backend
- you want zero-email-sent verification to avoid spamming users
- you need disposable and role-account detection built in

## When to avoid
- you need high-volume bulk email list cleaning with deliverability scoring
- your app is not in Go
- SMTP verification is blocked by your network or target providers (graylisting, rate limits)

## Facets
- artifact type: library
- maturity: active
- function: email, form-handling, security
- domain: email, developer-tools, backend
- platform: go, cross-platform
- tags: email-verification, smtp-check, disposable-email-detection, mx-records, syntax-validation

## Member repositories
- AfterShip/email-verifier (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:10.377657+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 2026-08-30T03:51:35.420508+00:00, confidence not recorded.
  - readme: https://github.com/AfterShip/email-verifier (fetched 2026-08-28T04:05:10.377657+00:00, sha 536951408d45)
- Data as of 2026-08-30T08:39:29.467469+00:00.