Deleting duplicate emails may feel confusing with "Conversation grouping"

[MasterInQuestion]

    E.g. emails of identical title, content, sender.     When deleting with:     https://account.proton.me/u/0/mail/general#viewMode     ; enabled.

    It seems confusing which one (or all?) would be deleted from Trash.

    Also I believe the "Delete" button should be red.     (as in "Delete all" of Trash)

    And the "Delete" button should also exist aside of "Move to Trash", for other folders.     (at times trashing might be excessive)

    Same applies to Proton Drive.