A tech question?

[Grits]

When messages are sent, I note that they're trackable. If these messages are unread, and are deleted by me, are they deleted in my cache only, or are they deleted in both mine and the recipient's cache since having been unopened? Or is there no control once submitted?

These fill up one's message box/folders quickly when unread preventing others from moving.

??? Anyone, as still on the learning curve here.