>I put some code in my forms that grabbed the email address when focus left the email input box – even if part of a larger form – and sent it back to the server

>I put some code in my forms that grabbed the email address when focus left the email input box – even if part of a larger form – and sent it back to the server. [...] Once I have that email address, I can backfill info to build a customer profile [...] This little hack is super-awesome because even if they don’t complete the entire form, as long as they fill in the email address, I get the data. Holy shit.