ENG-762 Send message to newly assigned users

[JadeCara]

Issue ENG-762

Description Of Changes

Adds a the functionality to send an assignment message to users who have just been assigned a task. Includes email template html and tests.

Code Changes

• Added new function _send_task_assignment_notifications which is a new helper task which will automatically be called when new users are assigned to a task.
• Added email templating functionality
• Added email template
• Added test.

Steps to Confirm

1. list any manual steps for reviewers to confirm the changes

Pre-Merge Checklist

• [ ] Issue requirements met
• [ ] All CI pipelines succeeded
• [ ] CHANGELOG.md updated
  • [ ] Add a https://github.com/ethyca/fides/labels/db-migration label to the entry if your change includes a DB migration
  • [ ] Add a https://github.com/ethyca/fides/labels/high-risk label to the entry if your change includes a high-risk change (i.e. potential for performance impact or unexpected regression) that should be flagged
  • [ ] Updates unreleased work already in Changelog, no new entry necessary
• Followup issues:
  • [ ] Followup issues created
  • [ ] No followup issues
• Database migrations:
  • [ ] Ensure that your downrev is up to date with the latest revision on main
  • [ ] Ensure that your downgrade() migration is correct and works
    • [ ] If a downgrade migration is not possible for this change, please call this out in the PR description!
  • [ ] No migrations
• Documentation:
  • [ ] Documentation complete, PR opened in fidesdocs
  • [ ] Documentation issue created in fidesdocs
  • [ ] If there are any new client scopes created as part of the pull request, remember to update public-facing documentation that references our scope registry
  • [ ] No documentation updates required

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
fides-plus-nightly	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 21, 2025 3:32am

1 Skipped Deployment

Name	Status	Preview	Comments	Updated (UTC)
fides-privacy-center	⬜️ Ignored (Inspect)			Jun 21, 2025 3:32am

[codecov[bot]]

Codecov Report

:x: Patch coverage is 24.24242% with 25 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 86.07%. Comparing base (2be2db6) to head (e696e28). :warning: Report is 184 commits behind head on main.

Files with missing lines	Patch %	Lines
.../fides/service/manual_tasks/manual_task_service.py	0.00%	23 Missing :warning:
...rc/fides/api/email_templates/get_email_template.py	33.33%	1 Missing and 1 partial :warning:

:x: Your patch status has failed because the patch coverage (24.24%) is below the target coverage (100.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6253      +/-   ##
==========================================
- Coverage   86.15%   86.07%   -0.08%     
==========================================
  Files         448      448              
  Lines       28027    28059      +32     
  Branches     3025     3029       +4     
==========================================
+ Hits        24146    24153       +7     
- Misses       3229     3253      +24     
- Partials      652      653       +1     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

:rocket: New features to boost your workflow:

• :snowflake: Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• :package: JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[JadeCara]

I think this needs to be updated to make sure its working with the respondents email verification stuff - https://github.com/ethyca/fides/blob/f704c4f8c6348901826e5fc9e188d14aab0d81a3/src/fides/api/models/fides_user_respondent_email_verification.py

[galvana]

We send the user an invite when we create the user in Fides. The API endpoints also let you resend the invite link, in essence, a re-invitation. We need to spend some time creating a digest of pending tasks so we don't send an email every time a new privacy request is created.