Q&A email notifcation

what's going on here?

when i ask a question, and after its published, the option underneath the submit button for "email notification" is not present.

however when i look at another users question...the option is present.

isn't this counterintuitive? please help us to make sure that option is present for all questions.

also - how do we edit this text or place an image in front? is in the php or css or both?

thank you.