When I send an email and I get a response, more often than not, in the To: is my email address. However, my email address also ends up in the From: column.The reply-from address is nowhere to be found;so I don't have any address with which I can send my reply, as both of them have just my email address.

What am I doing wrong here? Is there some set-up in my Tools > Options which is incorrect? The set-up in Options is pretty difficult to understand and it doesn't offer any to or reply-from choices.

This is critical because I just cannot answer my emails because there is no one I can send a reply to.