Hey Rosie!
Yes, always one by one!
Don't attach any images or documents to the email as they definitely won't check it.
Your email should have all the P1 info asked before:
Name as it appears on your passport:
UCI:
Application #:
Personal email (one for the whole family):
Your eye color:
Your height (please provide in cm):
Original entry date (YYYY/MM/DD):
Date of last time you entered Canada (YYYY/MM/DD):
Location of last entry (which Canadian border or Canadian airport):
Are you currently inside Canada (yes or no):
