Email approval question

[chantilly]

I often read that people receive email approval for their I 485.
I never gave my email address to any organizations...Should I do it ? Who i'm supposed to send it to ?

Thank you for your help.

 

[myPR]

go to https://egov.immigration.gov/cris/jsps/selectusertype.jsp;jsessionid=co-oH_9_VFWf

to register.