1. How can I find a message from a particular user or moderator? I refer to the inbox as follows, sandwiched to the right of the Stack Exchange logo , and to the left of the green +7 :
2. What if I forgot their username?
3. Also, how can the huge inbox can be organised? Can I delete messages?
4. Pursuant to user Thursday's comment below, is there another inbox (of which I'm not aware)?
5. Would the downvoters please explain themselves, so this post can be improved if necessary?