Subscription Block: only add excerpt link to Newsletters

[arcangelini]

Closes https://linear.app/a8c/issue/NL-470/only-append-subscribe-message-in-newsletter-email-render

Proposed changes:

After	Before

Remove the jetpack_filter_excerpt_for_newsletter method from the excerpt filter and delete the method.

Other information:

• Have you written new tests for your changes, if applicable?
• Have you checked the E2E test CI results, and verified that your changes do not break them?
• Have you tested your changes on WordPress.com, if applicable (if so, you'll see a generated comment below with a script to run)?

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

No

Testing instructions:

1. Go to your Newsletter settings and set it to show Excerpt.
2. Create a post with and add a subscriptions block from the block inserter.
3. Set an excerpt or add some extra content to the post
4. Preview email for the post and ensure View post to subscribe to site newsletter. is gone

[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 fix/subscription-block-excerpt-text branch.
• To test on Simple, run the following command on your sandbox:

bin/jetpack-downloader test jetpack fix/subscription-block-excerpt-text

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 🤖

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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!

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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: March 3, 2026
  • Code freeze: March 3, 2026

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

[jp-launch-control]

Code Coverage Summary

Coverage changed in 1 file.

File	Coverage	Δ%	Δ Uncovered
projects/plugins/jetpack/extensions/blocks/subscriptions/subscriptions.php	121/671 (18.03%)	0.07%	-7 💚

Full summary · PHP report · JS report

[Copilot]

Pull request overview

This PR removes the Subscriptions block’s global excerpt mutation that appended a “View post … subscribe” message, preventing that text from being injected into excerpts (including newsletter excerpt emails), and records the fix in the Jetpack changelog.

Changes:

• Removed the get_the_excerpt filter hook that appended newsletter subscription messaging when a post contained the Subscriptions block.
• Deleted the now-unused jetpack_filter_excerpt_for_newsletter() function.
• Added a changelog entry documenting the bugfix.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
projects/plugins/jetpack/extensions/blocks/subscriptions/subscriptions.php	Removes the excerpt filter + helper that appended the “View post … subscribe” message.
projects/plugins/jetpack/changelog/fix-subscription-block-excerpt-text	Adds a patch-level changelog note for the behavior change.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 2 changed files in this pull request and generated no new comments.

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