generated: '2026-08-14'
method: searched
source: >-
  npm registry (registry.npmjs.org), PyPI (pypi.org), RubyGems (rubygems.org),
  Packagist (repo.packagist.org) and the apilayer GitHub organization
  (api.github.com/orgs/apilayer/repos), queried 2026-08-14.
description: >-
  Client libraries for the mailboxlayer Verification API. APILayer publishes NO
  currently-maintained first-party SDK: the only first-party packages on any registry
  are @apilayer/mailboxlayer (npm, last published 2019-10-01, single version 0.1.6)
  and email-address-validation (npm, last published 2016-02-10), and the matching
  GitHub repositories — apilayer/mailboxlayer-API and apilayer/email-address-validation —
  are both ARCHIVED. Everything else in this file is community-maintained. The docs
  themselves ship only inline PHP-cURL and jQuery.ajax snippets rather than an SDK.

summary:
  official_count: 2
  official_maintained_count: 0
  community_count: 6
  registries_checked: [npm, pypi, rubygems, packagist, github]
  registries_with_no_result: [pypi]
  note: >-
    A first-party SDK whose last release predates the API it wraps is an abandonment
    signal. The mailboxlayer OpenAPI published on SwaggerHub in 2026 documents a
    /bulk_check endpoint and a catch_all parameter that the 2019 npm package cannot
    have covered.

packages:
  # ---- first-party (apilayer) ----
  - language: javascript
    registry: npm
    name: '@apilayer/mailboxlayer'
    url: https://www.npmjs.com/package/@apilayer/mailboxlayer
    install: npm install @apilayer/mailboxlayer
    official: true
    version: 0.1.6
    published: '2019-10-01'
    maintained: false
    note: >-
      Only version ever published (0.1.6, 2019-10-01); registry metadata last modified
      2022-04-04. No repository or homepage declared in the package manifest.

  - language: javascript
    registry: npm
    name: email-address-validation
    url: https://www.npmjs.com/package/email-address-validation
    install: npm install email-address-validation
    official: true
    version: 0.2.1
    published: '2016-02-10'
    maintained: false
    repository: https://github.com/apilayer/email-address-validation
    note: >-
      Published from the apilayer GitHub organization; the source repository is archived.
      Predates the current API surface by a decade.

  # ---- community ----
  - language: typescript
    registry: npm
    name: mailboxlayer-node-client
    url: https://www.npmjs.com/package/mailboxlayer-node-client
    install: npm install mailboxlayer-node-client
    official: false
    version: 1.0.13
    published: '2021-05-15'
    repository: https://github.com/damienmarchandfr/mailboxlayer-node-client
    note: Community Node/TypeScript client, already linked from apis.yml as an SDK.

  - language: ruby
    registry: rubygems
    name: mailboxlayer
    url: https://rubygems.org/gems/mailboxlayer
    install: gem install mailboxlayer
    official: false
    version: 1.1.0
    published: '2018-06-02'
    repository: https://github.com/actfong/mailboxlayer
    note: Community Ruby wrapper.

  - language: php
    registry: packagist
    name: ashallendesign/laravel-mailboxlayer
    url: https://packagist.org/packages/ashallendesign/laravel-mailboxlayer
    install: composer require ashallendesign/laravel-mailboxlayer
    official: false
    version: v1.0.1
    published: '2020-12-31'
    repository: https://github.com/ash-jc-allen/laravel-mailboxlayer
    note: Community Laravel wrapper.

  - language: php
    registry: packagist
    name: ylly/mailboxlayerbundle
    url: https://packagist.org/packages/ylly/mailboxlayerbundle
    install: composer require ylly/mailboxlayerbundle
    official: false
    version: 1.0.1
    published: '2018-09-27'
    repository: https://github.com/ylly/mailboxlayerbundle
    note: Community Symfony bundle.

  - language: javascript
    registry: npm
    name: '@posthog/mailboxlayer-plugin'
    url: https://www.npmjs.com/package/@posthog/mailboxlayer-plugin
    install: npm install @posthog/mailboxlayer-plugin
    official: false
    version: 0.0.7
    published: '2022-10-28'
    repository: https://github.com/PostHog/mailboxlayer-plugin
    note: >-
      Integration, not a general-purpose SDK — scores PostHog user emails through the
      mailboxlayer API. Published by PostHog, not APILayer.

  - language: javascript
    registry: npm
    name: '@pipedream/mailboxlayer'
    url: https://www.npmjs.com/package/@pipedream/mailboxlayer
    install: npm install @pipedream/mailboxlayer
    official: false
    version: 0.0.1
    published: '2025-01-11'
    note: Pipedream connector components; third-party platform integration.

absent:
  - registry: pypi
    queried: [mailboxlayer, mailboxlayer-python]
    result: 404
    note: No mailboxlayer package of any kind is published on PyPI.
  - registry: maven-central
    result: not-found
  - registry: nuget
    result: not-found
  - registry: crates.io
    result: not-found
  - registry: pkg.go.dev
    result: not-found