We had an interesting problem pop up this week.  Two unknown email addresses signed themselves up to some of our contact lists using legacy sign-up forms.   It is likely this user search our domains SPF record and saw that we were using constant contact and was able to find a legacy sign up form.  Thankfully the contact list they added themselves to was not an important one, but I would at this time, there is no way to remove these legacy sign up forms, and we were unaware they existed until the users added themselves and I received an email alert.   I would like to request to the product team that the ability to disable or delete these legacy sign-up forms be added. ... View more