"Broken project website URL" sends too much alert email

[alvinhochun]

Describe the issue

The "project website" is a per-project setting, yet the "broken project website URL" alert triggers an alert email per component. In our case we have 295 components in a project. The project website appeared to be temporarily offline to our Weblate instance, and Weblate proceeded to send us 295 emails each.

I already tried

• I've read and searched the documentation.
• I've searched for similar issues in this repository.

Steps to reproduce the behavior

1. Create a project with a lot of components
2. Make Weblate fail to connect to the project website URL

Expected behavior

At most one alert email per user shall be sent.

Screenshots

No response

Exception traceback

No response

How do you run Weblate?

Docker container

Weblate versions

Weblate 4.12.2

Weblate deploy checks

No response

Additional context

cc @pan93412

[pan93412]

Some screenshots about this issue:

[github-actions]

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