If you read messages in preview pane of Outlook (as I do) the address doesn't appear.  You have to choose 'reply' and read down the senders address.

 

Ian 

Dear Amanda,

you write ;;;

Everyone's personal email address appears at the top of the posting. For instance I know that yours is [log in to unmask] right?

 

This is my address...but on my postings your address doesn't appear..nor does many others. Maybe it's just my pc settings?