WIP - add newsletter free tier settings jp

[Addison-Stavlo]

Fixes #

Proposed changes

Related product discussion/links

Does this pull request change what data or activity we track or use?

Testing instructions

• Go to '..'

[github-actions]

Are you an Automattician? Please test your changes on all WordPress.com environments to help mitigate accidental explosions.

• To test on WoA, go to the Plugins menu on a WoA dev site. Click on the "Upload" button and follow the upgrade flow to be able to upload, install, and activate the Jetpack Beta plugin. Once the plugin is active, go to Jetpack > Jetpack Beta, select your plugin (Jetpack), and enable the add/newsletter-free-tier-settings branch.
• To test on Simple, run the following command on your sandbox:

bin/jetpack-downloader test jetpack add/newsletter-free-tier-settings

Interested in more tips and information?

• In your local development environment, use the jetpack rsync command to sync your changes to a WoA dev blog.
• Read more about our development workflow here: PCYsg-eg0-p2
• Figure out when your changes will be shipped to customers here: PCYsg-eg5-p2

[github-actions]

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

• ✅ Include a description of your PR changes.
  
• ✅ Add a "[Status]" label (In Progress, Needs Review, ...).
  
• ✅ Add testing instructions.
  
• ✅ Specify whether this PR includes any changes to data or privacy.
  
• ✅ Add changelog entries to affected projects
  

This comment will be updated as you work on your PR and make changes. If you think that some of those checks are not needed for your PR, please explain why you think so. Thanks for cooperation 🤖

---

Follow this PR Review Process:

1. Ensure all required checks appearing at the bottom of this PR are passing.
2. Make sure to test your changes on all platforms that it applies to. You're responsible for the quality of the code you ship.
3. You can use GitHub's Reviewers functionality to request a review.
4. When it's reviewed and merged, you will be pinged in Slack to deploy the changes to WordPress.com simple once the build is done.

If you have questions about anything, reach out in #jetpack-developers for guidance!

---

Jetpack plugin:

The Jetpack plugin has different release cadences depending on the platform:

• WordPress.com Simple releases happen as soon as you deploy your changes after merging this PR (PCYsg-Jjm-p2).
• WoA releases happen weekly.
• Releases to self-hosted sites happen monthly:
  • Scheduled release: July 7, 2026
  • Code freeze: July 6, 2026

If you have any questions about the release process, please ask in the #jetpack-releases channel on Slack.

[Copilot]

Pull request overview

Adds support for configuring the Newsletter free subscription tier via the existing subscription_options site setting, including sanitization and API exposure across Jetpack’s settings endpoints.

Changes:

• Extend subscription_options to accept free_tier_description (HTML stripped + length-capped) and hide_free_tier (boolean).
• Update both the WP.com JSON API site settings endpoint and Jetpack Core REST module endpoints to persist these new keys.
• Add/extend PHPUnit coverage and add a changelog entry.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
projects/plugins/jetpack/tests/php/json-api/WPCOM_JSON_API_Site_Settings_V1_4_Endpoint_Test.php	Adds POST tests for free tier description sanitization/length capping and hide flag handling.
projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-site-settings-endpoint.php	Allows and sanitizes new subscription_options keys when updating settings via WP.com JSON API.
projects/plugins/jetpack/_inc/lib/core-api/class.jetpack-core-api-module-endpoints.php	Mirrors subscription_options updates/sanitization for the Core REST module endpoints.
projects/plugins/jetpack/_inc/lib/class.core-rest-api-endpoints.php	Updates schema/description/defaults and validation allowlist for subscription_options.
projects/plugins/jetpack/changelog/add-newsletter-free-tier-settings	Documents the new settings in the Jetpack changelog.

[jp-launch-control]

Code Coverage Summary

Coverage changed in 4 files.

File	Coverage	Δ%	Δ Uncovered
projects/plugins/jetpack/_inc/lib/core-api/class.jetpack-core-api-module-endpoints.php	177/856 (20.68%)	-0.24%	10 💔
projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-site-settings-endpoint.php	404/865 (46.71%)	0.51%	1 ❤️‍🩹
projects/plugins/jetpack/_inc/lib/class.core-rest-api-endpoints.php	1688/2617 (64.50%)	0.03%	0 💚
projects/plugins/jetpack/class.json-api.php	44/475 (9.26%)	0.21%	-1 💚

Full summary · PHP report · JS report

_{If appropriate, add one of these labels to override the failing coverage check: Covered by non-unit tests Use to ignore the Code coverage requirement check when E2Es or other non-unit tests cover the code Coverage tests to be added later Use to ignore the Code coverage requirement check when tests will be added in a follow-up PR I don't care about code coverage for this PR Use this label to ignore the check for insufficient code coveage.}

[Copilot]

Pull request overview

Copilot reviewed 5 out of 5 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

[Copilot]

Pull request overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.