You can, but that will require additional work, first you will have to use the search feature of facebook graph api to get the userid of the email address and t

You can, but that will require additional work, first you will have to use the search feature of facebook graph api to get the userid of the email address and then finally, get the profile image from that userid using FaceGrab. Now note, while getting the profile photo can be achieved without any login, however, if you want to get userid of a user from email address, you would require authorization token which you can get by logging in and creating a facebook app.