when does an anonymous lead become un anonymous

[Anonymous]

once someone fills out a form, do they become un-anonymous? Or does marketo have a way of getting their e-mail and name otherwise?

Thanks

[Kim_Allen · Accepted solution]

Hi Isabela,

Hope this helps: https://community.marketo.com/MarketoArticle?id=kA050000000LCxMCAW !

Kim

[Anonymous]

If you have the email address in a cookie or some manner, you can associate the lead your self calling the associate lead JS call. 
http://developers.marketo.com/documentation/websites/lead-tracking-munchkin-js/