Soft Delete PMs?
 

I'm looking for a mod that "soft deletes" PMs instead of hard deleting them, when a user deletes from their PMs.

Ideally this would be a separate "Folder" and act like a Recycle bin for PMs. I'd imagine that this box would "use up" their available space, just like any other folder, and that, while using the Delete button in this folder would really hard delete the PM (with confirmation!). In all other boxes, the Delete button would really just move the PM into that "Recycle Bin" folder.

So - perhaps what I'm looking for, is a mod that changes the Delete behavior in PMs to the "move" command, and will move PMs into a new (undeletable) folder. Then, in that folder, the Delete command works as intended, except with a confirmation. This Recycle Bin folder would have a "Restore" button that would undelete the PM and move it back into its original folder (Sent, Inbox, custom folder, etc).

I've had several users mean to delete a day's worth of PMs, but click the "All" box at the top instead, and accidentally delete their whole inbox instead.