generated: '2026-08-12' method: searched source: >- https://api.wordpress.org/plugins/info/1.0/mailoptin.json, https://repo.packagist.org/p2/mailoptin/*.json, https://api.github.com/orgs/mailoptin/repos note: >- IMPORTANT — none of these are client SDKs. MailOptin publishes no hosted product API, so there is nothing for an SDK to wrap. What it publishes is (a) the plugin itself, distributed through the WordPress.org plugin repository, and (b) the plugin's own internal PHP libraries, published to Packagist under the `mailoptin/` vendor namespace for its build. They are recorded here as real, first-party, dated distributions — and deliberately NOT wired as `type: SDKs`, because doing so would credit MailOptin with a developer SDK surface it does not have. package_count: 7 official_count: 7 sdk_count: 0 packages: - name: mailoptin registry: wordpress.org official: true kind: plugin language: PHP url: https://wordpress.org/plugins/mailoptin/ registry_metadata: https://api.wordpress.org/plugins/info/1.0/mailoptin.json version: 1.2.78.1 published: '2026-07-28' downloads: 2434900 rating: 96 num_ratings: 435 requires_wordpress: '6.4' tested_wordpress: 7.0.4 requires_php: '7.4' first_published: '2017-07-17' note: >- The free "lite" build. Versions on the 1.x line; the premium build tracks the same dates on a 2.x line (see changelog/mailoptin-changelog.yml). Actively maintained — latest release is the same week as this pass. - name: mailoptin/core registry: packagist official: true kind: library language: PHP url: https://packagist.org/packages/mailoptin/core repository: https://github.com/mailoptin/core registry_metadata: https://repo.packagist.org/p2/mailoptin/core.json version: 0.1.0-alpha.1785158752 published: '2026-07-27' release_count: 372 downloads: 2918 note: >- The plugin's core engine, republished on every build; the version is a timestamped alpha, not a semver release, so a consumer cannot read compatibility from it. Current. - name: mailoptin/advanceanalytics registry: packagist official: true kind: library language: PHP url: https://packagist.org/packages/mailoptin/advanceanalytics repository: https://github.com/mailoptin/advanceanalytics registry_metadata: https://repo.packagist.org/p2/mailoptin/advanceanalytics.json version: 0.2.1785158729 published: '2026-06-19' release_count: 249 downloads: 902 - name: mailoptin/mailchimp-api-php registry: packagist official: true kind: library language: PHP url: https://packagist.org/packages/mailoptin/mailchimp-api-php repository: https://github.com/mailoptin/mailchimp-api-php registry_metadata: https://repo.packagist.org/p2/mailoptin/mailchimp-api-php.json version: 2.1.7 published: '2026-07-27' release_count: 20 downloads: 1072 license: GPL-2.0-or-later note: >- A maintained fork of a third-party PHP client for the MAILCHIMP v3 API — a library MailOptin consumes, not one it offers to its own users. The only package here that carries a real semver version. - name: mailoptin/authifly registry: packagist official: true kind: library language: PHP url: https://packagist.org/packages/mailoptin/authifly repository: https://github.com/mailoptin/authifly registry_metadata: https://repo.packagist.org/p2/mailoptin/authifly.json version: 0.1.0-alpha.1587979879 published: '2020-04-24' release_count: 125 downloads: 1190 license: MIT note: >- PHP OAuth authentication library used for the third-party provider connections. Last published 2020 — six years stale relative to the plugin, which shipped this month. Still vendored into current builds. - name: mailoptin/libsodium registry: packagist official: true kind: library language: PHP url: https://packagist.org/packages/mailoptin/libsodium repository: https://github.com/mailoptin/libsodium registry_metadata: https://repo.packagist.org/p2/mailoptin/libsodium.json version: 0.1.0-alpha.1587979917 published: '2020-04-21' release_count: 131 downloads: 1064 note: Cryptography shim. Last published 2020. - name: mailoptin/libprodium registry: packagist official: true kind: library language: PHP url: https://packagist.org/packages/mailoptin/libprodium repository: https://github.com/mailoptin/libprodium registry_metadata: https://repo.packagist.org/p2/mailoptin/libprodium.json version: 0.1.0-alpha.1539094582 published: '2018-09-15' release_count: 41 downloads: 217 note: Last published 2018. Oldest first-party distribution in the namespace. registries_checked_with_no_result: - registry: npm url: https://registry.npmjs.org/mailoptin status: 404 - registry: pypi url: https://pypi.org/pypi/mailoptin/json status: 404 - registry: rubygems url: https://rubygems.org/api/v1/gems/mailoptin.json status: 404