Feature Request: filter to only show mails with an error

I see in the support forum that the question has been asked about 14 months ago as well, but it somehow got closed without any feedback (see: https://wordpress.org/support/topic/a-suggestion-filter-for-only-errors/).

Is this very some useful feature request already included in the roadmap / backlog?

It would be highly appreciated and would speed up troubleshooting failed mails tremendously.

Cheers!