I think we should be able to delete a PM without opening it. I have received a PM which by looking at the preview is blatant spam. I do not wish to open it and I wish to delete it. Without opening it however I can neither delete nor block it.
My idea has two features.
1. Allow the deletion of PMs from the main PM menu
2. Allow the reporting of PMs from the main PM menu
3. Allow PMs to be marked as unread.
On a technical level this would be easy to implement by utilizing the tick boxes and the three dot menu button and would help
1. In times when people get spam (delete.)
2. In times where bullying is clear (report with no need to open and read the full thing, the preview is enough.)
3. In times when we read a PM but don't have the time to reply there and then (mark as unread.)