Feat/newsletter digest pipeline

[HarshitVerma109]

Proposed change

Resolves #5501
Adds the newsletter digest pipeline for sending personalized snapshot emails to subscribers.

Checklist

• Required: I followed the contributing workflow
• Required: I verified that my code works as intended and resolves the issue as described
• Required: I ran all required checks and tests locally; all warnings addressed and failures resolved
• I used AI for code, documentation, tests, or communication related to this PR

[HarshitVerma109]

Hi @kasya, Actually this PR only focuses on the email template. I informed you about this in our private Slack channel, but I think you haven't seen it. If you think the template is right, then I will push the frontend and other changes too. They are ready I just haven't pushed them because I want a review on the template first.

[kasya]

Thanks for clarifying that @HarshitVerma109 ! I missed your original message in Slack at first.

I reviewed this again, and I do have some requests on better handling of how much data to show int he email. This should be more flexible depending on number for entities included in the subscription and on how much data those entities handle in our case. Ideally, we'd handle that in the logic and only pass needed data to the template.

---

Some examples I've been testing with:

• Oh My AI subscription has 4 entities subscribed, but that first project we have we currently show only 1 issue (theoretically 2 after changes, same space if kept on one line). Which means we could still show way more data in the email. Maybe those 3 more entities also only have issues (2 each per line). Or Issues and releases (again, 2 per line).

• Another example, Dependency subscription has 2 entities only. This is what I'm seeing for a weekly sub filtered from a full year's subscription we have for 2025:

There's just one more entity left, with us only showing 2 data points for first entity.

With applying the suggestions from below in my review I believe we should be able to come up with a better handling of this. This should be dynamic based on how much data we have.

[kasya]

Can we make the whole template a bit wider to incorporate more data?
For example, I think we can fit in at least 2 blocks on one line for Issues and Releases (might have to truncate issues title at some point). And move the more block to the end of the line

Same for Contributors - we could show 5-8 on one line if we change layout a bit: showing just one person does not make much sense. I think the best way to show these would be to just add round avatars, ending with t circle saying something like +53 more at the end on the same line.

This way we get rid of all of that space between blocks. I'd also get rid of the light gray block that we have under each type (Releases, Issues, etc). It adds unnecessary padding. It might still work if we change layout as I mentioned above, but if we need to find even more space after that - this would be our next step.

The only entity that might be not that easy to update is Chapters, because they have more info on the card. But we could try to fit 2-3 (one being the + N small card in the end) one that wider layout. 🤔 We could also get rid of leaders on that card and only leave the location and short description (truncated).

[kasya]

Do you think projects should be shown after the Releases 🤔 Projects are one of the major entities in OWASP..

With this current layout when I'm subscribed to all entities - my email doesn't show projects at all before the View more button.

[kasya]

I'm also not sure if need to show this, and dated for the snapshot we deriving this data from.

End user does not care where we get this data from and the name of the subscription and dates does not make any sense to them and could even be confusing.

[coderabbitai]

Actionable comments posted: 2

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Inline comments:
In `@backend/src/apps/owasp/services/newsletter.py`:
- Line 129: Update the plain-text snapshot digest template’s row-based sections
to iterate over each section’s rows collection instead of the dictionary .items
method, covering chapters_data, issues_data, prs_data, releases_data,
posts_data, and events_data. Use nested loops to render each row’s fields, and
add a rendering test that verifies records appear in the plain-text output.

In `@backend/src/apps/owasp/templates/emails/snapshot_digest.txt`:
- Around line 17-19: Update the project-content loop in the snapshot digest
template to iterate over content.items instead of content.rows, preserving the
existing item rendering and project-count suffix behavior.

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---

ℹ️ Review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 9626d4f and f6377e0.

📒 Files selected for processing (4)

• backend/src/apps/owasp/services/newsletter.py
• backend/src/apps/owasp/templates/emails/snapshot_digest.html
• backend/src/apps/owasp/templates/emails/snapshot_digest.txt
• backend/tests/unit/apps/owasp/services/newsletter_test.py

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[cubic-dev-ai]

All reported issues were addressed across 4 files (changes from recent commits).

Not reviewed (too large): backend/src/apps/owasp/templates/emails/snapshot_digest.html (~1,194 lines) - if these are generated or fixture files, add them to ignored paths to exclude them from future reviews.

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[cubic-dev-ai]

All reported issues were addressed across 3 files (changes from recent commits).

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[cubic-dev-ai]

0 issues found across 1 file (changes from recent commits).

Confidence score: 5/5

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• No files require special attention.

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[HarshitVerma109]

Hi @kasya, please review it and let me know if changes are required.

[kasya]

These look much better 👍🏼 @HarshitVerma109

addressed

[kasya]

@coderabbitai review

[coderabbitai]

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[cubic-dev-ai]

All reported issues were addressed across 14 files (changes from recent commits).

Not reviewed (too large): backend/src/apps/owasp/templates/emails/snapshot_digest.html (~1,226 lines) - if these are generated or fixture files, add them to ignored paths to exclude them from future reviews.

<sub>Tip: Review your code locally with the cubic CLI to iterate faster.

Re-trigger cubic</sub>

[sonarqubecloud]

Quality Gate failed

Failed conditions
4.5% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[cubic-dev-ai]

0 issues found across 1 file (changes from recent commits).

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

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