Thanks for reaching out!
As ISD Drew mentioned, this is a survey sent out by CCP. This field is shown when you answer yes to the question asking if you’d be willing to talk to CCP in the future about EVE Online.
Regarding your concerns regarding account recovery, it’s very prudent of you to have these concerns. I will add that should you work with the EVE support team to recover your account, they do ask significantly more strenuous questions than your character name and e-mail.
Thanks for verifying!