E-mail address

Short answer is, unless this person wants you to know who she is, you can't. Aol may or may not know who this person is, but for privacy reasons they woun't tell you. It is also very easy to fake email-- i.e. send mail that looks like it is coming from someone else.

Your best bet is to ask them. If they are annoying you, most email programs and sites allow you to filter out mail.

To add. If the e-mail is also inviting you to join something that seems to amazing to be true or a great offer and such, don't buy it. It's all a scam. Not with all mail but as you can't seem to find the departure of the mail then i would go for it.