I may be incredibly

I may be incredibly stupid but that help me get this subscriber thing setup so I need the help of someone with brains. Since I have never seen what is sent out I don’t know what the entries in the setup should be.

The first entry is: Notification From Sender

What is that supposed to be?

The other: Mail subject

Evidently, the notification and the subject are not the same, I guess because the instructions are: “You can use the %title% wildcard to show the latest post title/s, they will be shortened to no more than 50 characters”

To simplify this whole thing to you have a sample letter that this thing sends out so I can figure out what I need to enter in the setup?