Sorry that this is a question, but I don't know where else to post it.
I long ago hit my content posting limit on BC, and elect to attach content so that it is held by the site itself and not subject to removal due to circumstances outside the site's control. That being said, I know that a great deal of the images related to the early builds of Windows 10 are no longer valid/pertinent anyway as a number of the dialogs have changed, radically, and I have no compunction about nuking those if it makes room for me to attach material that's current to new messages.
Is there a way that an individual user can review their image/attachment content and selectively delete selected items? If so, how?