generated: '2026-08-13'
method: searched
source: >-
  https://mailchimp.com/developer/tools/ plus the registry metadata endpoints
  (registry.npmjs.org, pypi.org/pypi/*/json, rubygems.org/api/v1/gems/*.json,
  repo.packagist.org/p2/*.json) and the GitHub repositories in the mailchimp org,
  all read 2026-08-13.
description: >-
  First-party Mailchimp client libraries and mobile SDKs. The server-side
  Marketing and Transactional libraries are auto-generated and published from
  https://github.com/mailchimp/mailchimp-client-lib-codegen.
currency:
  checked: '2026-08-13'
  finding: >-
    The four MARKETING client libraries are frozen. Every one of them last
    published 3.0.80 on 2022-11-02 — the same day across npm, PyPI, RubyGems and
    Packagist, and the same date the four source repositories were last pushed —
    while the Marketing API contract Mailchimp serves at
    https://api.mailchimp.com/schema/3.0/Swagger.json is version 3.0.91. The
    official SDKs are eleven spec revisions and nearly four years behind the API
    they wrap. The four TRANSACTIONAL libraries are current: 1.4.1, published
    2026-03-24, matching the 1.4.1 spec in
    openapi/mailchimp-transactional-api-openapi-original.json.
packages:
  # --- Marketing API SDKs ---
  - language: javascript
    registry: npm
    name: "@mailchimp/mailchimp_marketing"
    url: https://www.npmjs.com/package/@mailchimp/mailchimp_marketing
    source: https://github.com/mailchimp/mailchimp-marketing-node
    install: npm install @mailchimp/mailchimp_marketing
    official: true
    api: mailchimp:mailchimp-marketing-api
    version: 3.0.80
    published: '2022-11-02'
  - language: python
    registry: pypi
    name: mailchimp-marketing
    url: https://pypi.org/project/mailchimp-marketing/
    source: https://github.com/mailchimp/mailchimp-marketing-python
    install: pip install mailchimp-marketing
    official: true
    api: mailchimp:mailchimp-marketing-api
    version: 3.0.80
    published: '2022-11-02'
  - language: php
    registry: packagist
    name: mailchimp/marketing
    url: https://packagist.org/packages/mailchimp/marketing
    source: https://github.com/mailchimp/mailchimp-marketing-php
    install: composer require mailchimp/marketing
    official: true
    api: mailchimp:mailchimp-marketing-api
    version: 3.0.80
    published: '2022-11-02'
  - language: ruby
    registry: rubygems
    name: MailchimpMarketing
    url: https://rubygems.org/gems/MailchimpMarketing
    source: https://github.com/mailchimp/mailchimp-marketing-ruby
    install: gem install MailchimpMarketing
    official: true
    api: mailchimp:mailchimp-marketing-api
    version: 3.0.80
    published: '2022-11-02'
  # --- Transactional (Mandrill) API SDKs ---
  - language: javascript
    registry: npm
    name: "@mailchimp/mailchimp_transactional"
    url: https://www.npmjs.com/package/@mailchimp/mailchimp_transactional
    source: https://github.com/mailchimp/mailchimp-transactional-node
    install: npm install @mailchimp/mailchimp_transactional
    official: true
    api: mailchimp:mailchimp-transactional-api
    version: 1.4.1
    published: '2026-03-24'
  - language: python
    registry: pypi
    name: mailchimp-transactional
    url: https://pypi.org/project/mailchimp-transactional/
    source: https://github.com/mailchimp/mailchimp-transactional-python
    install: pip install mailchimp-transactional
    official: true
    api: mailchimp:mailchimp-transactional-api
    version: 1.4.1
    published: '2026-03-24'
  - language: php
    registry: packagist
    name: mailchimp/transactional
    url: https://packagist.org/packages/mailchimp/transactional
    source: https://github.com/mailchimp/mailchimp-transactional-php
    install: composer require mailchimp/transactional
    official: true
    api: mailchimp:mailchimp-transactional-api
    version: 1.4.1
    published: '2026-03-24'
  - language: ruby
    registry: rubygems
    name: MailchimpTransactional
    url: https://rubygems.org/gems/MailchimpTransactional
    source: https://github.com/mailchimp/mailchimp-transactional-ruby
    install: gem install MailchimpTransactional
    official: true
    api: mailchimp:mailchimp-transactional-api
    version: 1.4.1
    published: '2026-03-24'
  # --- Mobile SDKs ---
  - language: swift
    registry: github
    name: Mailchimp-SDK-iOS
    url: https://github.com/mailchimp/Mailchimp-SDK-iOS
    source: https://github.com/mailchimp/Mailchimp-SDK-iOS
    install: Swift Package Manager / CocoaPods (see repo)
    official: true
    version: v2.0.4
    published: null
    notes: >-
      Mobile audience/contact SDK for iOS (marketing signup and contact
      management). Distributed from the repository rather than a package registry,
      so there is no registry metadata endpoint to date the release; version read
      from the latest git tag (v2.0.4). Repository last pushed 2025-04-25.
  - language: kotlin
    registry: github
    name: Mailchimp-SDK-Android
    url: https://github.com/mailchimp/Mailchimp-SDK-Android
    source: https://github.com/mailchimp/Mailchimp-SDK-Android
    install: Gradle (see repo)
    official: true
    version: null
    published: null
    notes: >-
      Mobile audience/contact SDK for Android. No package-registry listing and no
      semantic version tag on the repository — the newest tag is a branch-shaped
      label (event-listener-2), so a consumer cannot tell which build they are
      pulling. Repository last pushed 2026-02-12.
tooling:
  - name: mailchimp-client-lib-codegen
    url: https://github.com/mailchimp/mailchimp-client-lib-codegen
    official: true
    note: >-
      The generator Mailchimp uses to build and publish both SDK families, and the
      canonical home of the two API specs (spec/marketing.json,
      spec/transactional.json). Last pushed 2026-07-16.
cli:
  present: false
  note: >-
    Mailchimp publishes no first-party CLI. All 30 public repositories in the
    mailchimp GitHub org were reviewed on 2026-08-13; the developer tooling is
    client libraries, platform plugins (WooCommerce, Magento, WordPress) and the
    codegen tool. No cli/ artifact is emitted.