Post Not Found redirection
When a post was deleted and the community member click the button in the email notification then there is an error message shown but maybe it would be better to redirect user to a custom message and/or display some other post.
Note: we should be able to translate the error message (if applicable) and also maybe there should be a link on that error message to Report this error to Admin (Admin could manually redirect that post to other destination - this might be needed for important deleted posts (not only for SEO but also for UX) or when some user profile was deleted permanently from the WP directory - user content: posts were deleted woth that user profile).
Example: In case where a comment was deleted just show the main post, but when a post was deleted then show a message that it was removed by author or it is suspended by Admin due to some rules violations.
Ref: https://community.wpmanageninja.com/portal/space/community-meta/post/images-inserted-sideways
I think it's a very standard page for 404 posts. We should not do over-engineering about a deleted post or a 404 post.
Shahjahan Jewel, got it. Maybe we can handle this with some SEO plugin catching 404 Errors if this is the case. Anyway if there will be any easy solution then it could be included in Docs questions.